An elf whose job description is literally “one that makes war”, holding a sword: 1/1.
A cat: 2/2
Judging by what I assume is a warrior's shield hidden behind the HUD in the Cat token illustration I'd say the Cat is about Bear-sized, so... yeah, sure, seems right.
Esika's Chariot is the card that produces them. Those kitties are used to pull a god's chariot.
Hi for example, Kaheera, the orphanguard is my chosen companion. First game, pay 3 to get it from the sideboard then cast onto the field, it get killed and put into gy. On the second game is Kaheera shuffled into my deck, or is it back on the sideboard?
It is not part of your deck,
400.11. An object is outside the game if it isn't in any of the game's zones. Outside the game is not a zone.
400.11a. Cards in a player's sideboard are outside the game. See rule 100.4.
400.11b. Some effects bring cards into a game from outside of it. Those cards remain in the game until it ends.
Once the game ends, Kaheera is not part of the game anymore. The actions your performed during that game, such as bringing cards from outside the game to it, don't carry over to the second game.
While not playing a game, what you have is a list of cards that form your deck, and another list of cards that form your sideboard (including Kaheera). But as you are between games in a match, you can use the sideboard to modify the deck, so you may put Kaheera in your deck if you want to.
Mimic Vat's activated ability sets up a delayed triggered ability that triggers at the beginning of the next end step after the activated ability has resolved. It does use the stack.
So, when the end step begins, the delayed trigger to exile the Trynn-copy, and Trynn-copy's own token-creating ability, both trigger. You can put them on the stack in any order you want. You can also activate Silvar's ability in response to those triggers, sacrificing Trynn.
No matter the order they resolve, all abilities will resolve. Even if Trynn has been exiled or sacrificed, her ability is already on the stack, so the 1/1 token is still created.
CR needs to already be a LR at the moment you cycle a card.
You don't "have something trigger first". When you cycle a card, all relevant triggered abilities that currently exist trigger simultaneously. Then, you put all abilities you control that triggered on stack, in any order you choose. So you can put LR's first, then CR's, or the other way around. But in any order, CR didn't had LR's ability when you cycled, so there's no second damage trigger.
Target opponent reveals their hand.
You choose a nonland card from it.
That player discards that card.
[Then] You may put a card that has an Adventure that player owns from exile into that player's graveyard.
Memory Theft doesn't exile anything, it puts up to two different cards in your opponent's graveyard - one from their hand, and one from exile.
Those effects are followed in order. So you need to first pick any nonland card that is actually on their hand (the "used" Adventure that "shows" in their hand is actually in exile, so it can't be chosen at first); it can be a non-Adventure card. This is mandatory, as long as they have at least one nonland card in hand. The selected card is discarded (goes to their graveyard).
Then, you may select an Adventure card they own in exile (either an "usable" one that the game shows on their hand, or one that was exiled some other way and is not usable), and it also gets put on their graveyard. This part is optional, so you may accidentally skip doing it.
Butcher of Malakir's ability doesn't target anything - neither the creature, nor the player. As it doesn't target the creature, it can make your opponent sacrifice a creature enchanted with Shielding Plax.
Notice it's not about being a "sacrifice effect" - Mercy Killing is a sacrifice effect that targets the creature, so it wouldn't work here. It's all about the specific wording on the card itself.
So if I cast Comet Storm as long as the CMC is odd on the stack RR + X (of lets say 5) Obosh, the Preypiercer ability works. It will not see the multi kicker.
Correct. X+2 needs to be odd (as that's the CMC); kicker, multikicker and other additional costs don't count towards CMC.
The copies are not cast, so they don't trigger further "when you cast" abilities.
You will have two copies of Lightning Bolt from the original Repeated Reverberation, two copies from the Reverberation copy created by Swarm, and one copy of Bolt from the Swarm directly, for a total 5 copies plus the original Bolt.
If I enchant my opponent's creature with Alpha Authority, which gives it hexproof, can its controller target that creature with a Mutate ability?
They can. Hexproof means "This permanent can't be the target of spells or abilities your opponents control" - and as it is the creature that gets Hexproof, then the "you" means the creature's controller, not Authority's controller. So you can't target that creature anymore, while your opponent still can, with Mutate or any other kind of spell or ability.
Yes, you can. A restriction such as "activate this ability only of [condition]" is checked after you announce the ability, put it on the stack, and choose targets, but before you get to activate mana abilities to pay for its cost. So at the point the restriction matters, you still have your treasures and the activation is valid.
In regards to the time stamp question, what if two agents enter at the same time via an effect like Living Dead?
613.7k. If two or more objects would receive a timestamp simultaneously, such as by entering a zone simultaneously or becoming attached simultaneously, their relative timestamps are determined in APNAP order (see rule 101.4). Objects controlled by the active player (or owned by the active player, if they have no controller) have an earlier relative timestamp in the order of that player's choice, followed by each other player in turn order.
So it depends on whose turn it was when Living Death resolved.
If it's Player A's turn and they cast Living Death, with Player A and Player B both getting an Agent on the battlefield, then Player A's Agent will have the earlier timestamp (as the active player's), and Player B's Agent gets the later timestamp, meaning Player B's Agent 'wins out' when both would apply to the same search.
To activate an activated ability, the first action is to put the ability on the stack, and the last action is to pay its activation cost (there may be intermediate steps such as choosing targets, that don't matter here).
So, first you have Pontiff's ability on the stack, then you sacrifice Nevinyrral and pay 1 mana as its cost. This triggers Nevinyrral's ability, which also goes on the stack - and as the Pontiff's ability is already there, Nevinyrral's ability can only be put above it. Therefore, Nevinnyral's ability will be the first to resolve, when the Pontiff isn't indestructible yet.
The M19 planeswalkers are Ajani, Tezzeret, Liliana, Sarkhan and Vivien. Of those, Tezzeret and Liliana are aligned with Bolas, while Sarkhan and Vivien have reasons to oppose him, so my guess is Ajani is recruiting them.
Esika's Chariot is the card that produces them. Those kitties are used to pull a god's chariot.
It is not part of your deck,
400.11. An object is outside the game if it isn't in any of the game's zones. Outside the game is not a zone.
400.11a. Cards in a player's sideboard are outside the game. See rule 100.4.
400.11b. Some effects bring cards into a game from outside of it. Those cards remain in the game until it ends.
Once the game ends, Kaheera is not part of the game anymore. The actions your performed during that game, such as bringing cards from outside the game to it, don't carry over to the second game.
While not playing a game, what you have is a list of cards that form your deck, and another list of cards that form your sideboard (including Kaheera). But as you are between games in a match, you can use the sideboard to modify the deck, so you may put Kaheera in your deck if you want to.
Mimic Vat's activated ability sets up a delayed triggered ability that triggers at the beginning of the next end step after the activated ability has resolved. It does use the stack.
So, when the end step begins, the delayed trigger to exile the Trynn-copy, and Trynn-copy's own token-creating ability, both trigger. You can put them on the stack in any order you want. You can also activate Silvar's ability in response to those triggers, sacrificing Trynn.
No matter the order they resolve, all abilities will resolve. Even if Trynn has been exiled or sacrificed, her ability is already on the stack, so the 1/1 token is still created.
Sure. He is a creature you control that can be Feat of Resistance's target.
The total bonus he gives to other elves is immediately updated, yes.
You don't "have something trigger first". When you cycle a card, all relevant triggered abilities that currently exist trigger simultaneously. Then, you put all abilities you control that triggered on stack, in any order you choose. So you can put LR's first, then CR's, or the other way around. But in any order, CR didn't had LR's ability when you cycled, so there's no second damage trigger.
Target opponent reveals their hand.
You choose a nonland card from it.
That player discards that card.
[Then] You may put a card that has an Adventure that player owns from exile into that player's graveyard.
Memory Theft doesn't exile anything, it puts up to two different cards in your opponent's graveyard - one from their hand, and one from exile.
Those effects are followed in order. So you need to first pick any nonland card that is actually on their hand (the "used" Adventure that "shows" in their hand is actually in exile, so it can't be chosen at first); it can be a non-Adventure card. This is mandatory, as long as they have at least one nonland card in hand. The selected card is discarded (goes to their graveyard).
Then, you may select an Adventure card they own in exile (either an "usable" one that the game shows on their hand, or one that was exiled some other way and is not usable), and it also gets put on their graveyard. This part is optional, so you may accidentally skip doing it.
Notice it's not about being a "sacrifice effect" - Mercy Killing is a sacrifice effect that targets the creature, so it wouldn't work here. It's all about the specific wording on the card itself.
Correct. X+2 needs to be odd (as that's the CMC); kicker, multikicker and other additional costs don't count towards CMC.
You will have two copies of Lightning Bolt from the original Repeated Reverberation, two copies from the Reverberation copy created by Swarm, and one copy of Bolt from the Swarm directly, for a total 5 copies plus the original Bolt.
They can. Hexproof means "This permanent can't be the target of spells or abilities your opponents control" - and as it is the creature that gets Hexproof, then the "you" means the creature's controller, not Authority's controller. So you can't target that creature anymore, while your opponent still can, with Mutate or any other kind of spell or ability.
613.7k. If two or more objects would receive a timestamp simultaneously, such as by entering a zone simultaneously or becoming attached simultaneously, their relative timestamps are determined in APNAP order (see rule 101.4). Objects controlled by the active player (or owned by the active player, if they have no controller) have an earlier relative timestamp in the order of that player's choice, followed by each other player in turn order.
So it depends on whose turn it was when Living Death resolved.
If it's Player A's turn and they cast Living Death, with Player A and Player B both getting an Agent on the battlefield, then Player A's Agent will have the earlier timestamp (as the active player's), and Player B's Agent gets the later timestamp, meaning Player B's Agent 'wins out' when both would apply to the same search.
Yes, this is a valid play.
You receive priority after your opponent declares blockers, and Aura Swap can be activated at instant speed.
To activate an activated ability, the first action is to put the ability on the stack, and the last action is to pay its activation cost (there may be intermediate steps such as choosing targets, that don't matter here).
So, first you have Pontiff's ability on the stack, then you sacrifice Nevinyrral and pay 1 mana as its cost. This triggers Nevinyrral's ability, which also goes on the stack - and as the Pontiff's ability is already there, Nevinyrral's ability can only be put above it. Therefore, Nevinnyral's ability will be the first to resolve, when the Pontiff isn't indestructible yet.