cant i just choose the order as ascendancy then since the spirits are on the feild then use reyhans ability then the hydra or will the hydra only trigger because of the hydra says put the counters on any creature and reyhan would not trigger because it needs a specific target
While you can choose the order the triggers go on the stack, it won't help you here. Reyhan's ability targets, which means you have to choose a legal target for the trigger when it's put on the stack. No matter how you stack the triggers, the tokens from the Ascendancy have not been created when you're choosing the target for Reyhan's trigger, so you will not be able to put the counters on one of your new tokens.
No. There's no triggered ability. You can tell because it does not use the word "when", "whenever", or "at. You cannot Voidslime the skip a turn effect.
The effect making the land an Island doesn’t have a duration and will last indefinitely. The land retains any land types and abilities it already had. An Island has the ability “T: Add U.”
So yes, the effect will last as long as the land is on the battlefield, even if the Monster leaves play.
There's never a point where Yorvo is on the battlefield and it doesn't have the counter on it. It enters with the counters. It will always enter as a 4/4, not as a 0/0.
That is correct. Since Treachery's target is illegal when it goes to resolve, it won't do anything or enter the battlefield and will go to the graveyard. since it did not enter the battlefield, its enter the battlefield ability will not trigger and you will not get to untap any lands.
The Wurm doesn't prevent damage. It just changes the math so the damage doesn't reduce your life total to less than seven. You're still taking 4 damage, so the Beast's ability will trigger and it can deal 4 damage to one of your planeswalkers.
No you may not. If you activate the ability, pass priority to the opponent, and they pass it back without doing anything, then you've both just passed in succession without doing anything, and the top spell or ability (the Mystic's ability) will resolve, before you get priority again to activate Batterskull's ability. You'd have to activate Batterskull's ability before passing priority to the opponent, not after, if you wanted to bounce Batterskull and then put it onto the battlefield again.
If two Mystic Barriers are on the battlefield with two different chosen directions, you may not attack a player or planeswalker unless that player or the controller of that planeswalker is the opponent seated nearest you in both directions. (This happens most often in two-player games.)
So unless you're in a game with only two players left, no one will be able to attack.
No. In order for deathtouch to apply, the source with deathtouch must deal damage. If they kill the blocker before combat damage is dealt, then the creature with deathtouch will not deal any damage and the attacking creature will not be destroyed.
Flanking triggers when *that* creature is blocked by a creature without flanking, and only that creature's flanking ability will trigger, not every creature you control with flanking. In your example, the Sidewinder Sliver is blocked, but not the Gemhide Sliver, so Gemhide Sliver's flanking ability cannot trigger - only the Sidewinder Sliver's ability will trigger.
Remember, reminder text is *not* rules text. It's just a reminder of how the ability works. It doesn't matter what's printed on the card or what the reminder text says, you go by what the official rules say it does.
Lands can't be spells. A mana cost is only really relevant if you're casting it, but you cannot cast a land, you can only play one, so a land with a mana cost wouldn't behave much differently than a normal land (besides make its converted mana cost a nonzero number).
According to that text, the choice happens on resolution, not on announcement (it's not targeted). If you want to respond, you would have to do so before the ability resolves (and before knowing what permanent they'll choose), not after. They might make their choice know before the ability resolves (in which case, they'd be locked in to that choice unless you respond to the ability), but otherwise, you'll have to respond without knowing what they'll be choosing.
While you can choose the order the triggers go on the stack, it won't help you here. Reyhan's ability targets, which means you have to choose a legal target for the trigger when it's put on the stack. No matter how you stack the triggers, the tokens from the Ascendancy have not been created when you're choosing the target for Reyhan's trigger, so you will not be able to put the counters on one of your new tokens.
So yes, the effect will last as long as the land is on the battlefield, even if the Monster leaves play.
So unless you're in a game with only two players left, no one will be able to attack.
Remember, reminder text is *not* rules text. It's just a reminder of how the ability works. It doesn't matter what's printed on the card or what the reminder text says, you go by what the official rules say it does.