MTG Salvation

Usurp the Gods :symw::symu::symb::symr::symg:
Sorcery
Each opponent removes thier hand from the game until end of turn. Untap each permanent and gain control of them.
At the beginning of the next upkeep, you lose the game.

I like it. The mechanic, while a bad name, is clever. Solid 9/10.

Sivar Toff 1UG
Planeswalker - Sivar
At the beginning of your upkeep, put a +1/+1 counter on target creature.
+1: Target creature with a +1/+1 counter on it gains trample until end of turn.
-9: Gain control of each creature with a +1/+1 counter on it. Remove them from the game at the end of turn.
<3>

Next: Fix this card how you think it would be best done or do an evil mirror of Sivar.

Whew. That is pretty nasty. I know they need to do damage, so they still hit, but ouch! What does that do to tokens? Still, a bit narrow in its use, so it may not see too much play outside of UW control (depending on the format). May be still too good to print at that cost, but I am not sure. 8/10

Wall of Halos WWW
Creature - Wall
Defender, protection from red, protection from black
At the beginning of your upkeep, you gain X life where X is equal to the number of cards in your hand.
0/3

Next: Make a new mechanic that breaks the mold for Magic

Nest Egg 2
Artifact [R]
:symtap:: Remove a keepsake in your hand from the game face-down.
5, :symtap:, Sacrifice Nest Egg: Put up to three keepsakes removed from the game by Nest Egg into play under your control. Play this ability only any time you could play a sorcery.

Wormspoil Rot BG
Enchantment - Aura
Enchant land
When enchanted land becomes tapped, its controller sacrifices it unless each opponent discards a card.
If Wormspoil Rot is put into your graveyard from your library, remove it from the game.
Dredge 8
"It never ceases, its decay an unending threat to our lands and our sanity." - Iyia, Mhargesi Druid

Hmm. Seems like Jotun Grunt. Without cumulative, it seems a bit strong. Being only 3/3 makes it easier to kill, though. Still, I think it should be double black. 7/10

Dense Plot 2R
Tribal Enchantment - Goblin
Sacrifice a mountain: Draw a card.
"It seemed like a good idea at the time."

Next: Make another card named Dense Plot, but think outside the box

Boonfegor 2WWGG
Legendary Creature - Angel Elf
Flying
When Boonfegor comes into play, draw X cards, where X is equal to the number of creatures you control. Each opponent sacrifices a land for each card drawn this way.
An elf can always be trusted, and an angel will rule justly.
6/6
Next: Rakka Mar

That works. I don't think I could see them printing that ability though, as it seems a bit taxing on the brain. 6/10

Towering Lithedex 1UUU
Creature - Beast
Shroud, Shadow
When another permanent comes into play, sacrifice Towering Lithedex.
UUU: Return Towering Lithedex from your graveyard to your hand.
10/1

Next: Create a Plane of your own, add some backstory, and give us a card with a new, unique mechanic.

Wow. That is a nasty, nasty beastie. It fits the Timmy slot, but it is a solid creature with good abilities. Well-costed too, given all it has. 9/10

Lurking Doom
Enchantment [R]
(Nonexistent mana costs can't be paid.)
When Lurking Doom is turned face up, destroy target red, blue, or white creature.
Creatures you control have Rending.
Lurking Doom is black.
Morph 3BB

Rending
When a creature you control deals damage to a creature, it deals damage equal to its power to each player.

Next: Give the Eten a keyword, or make a creature with Rending for the Greantish.

Quote from ArchGenius

The winner is Xyre, Congratulations.

Called it.

Delios Songsmith :1mana::symuw::symuw:
Creature - Human Cleric [R]
Echo :1mana::symuw::symuw:
At the beginning of your upkeep, remove an artifact or enchantment in your hand from the game.
Until end of turn, spells you play that share a type with the removed card costs 2 less to play.
"They sing the songs of their own salvation."
1/3

Simple. Mana-intensive, but no drawback. Just a bit basic. 7/10

Eten Relicweaver 1UR
Creature - Bird Wizard
Haste, Flying
W: Eten Relicweaver gains lifelink until end of turn.
"Their bodies etched in runes, their soaring shapes carving swathes in the Enemy, bringing hope to the Eten."
3/2

Shock-trooper of the "Eten", a warlike bird people that are now battling for their futures against an unknown enemy.

Next: Do another critter from this plane

Hmm. Seems good, but narrow. Johnny-type card, if anything. 5/10

Penta 5
Artifact Creature - Construct
5, Sacrifice Penta: Put five 1/1 artifact creature tokens named Pentids into play that have "Sacrifice five Pentids: Return Penta from your graveyard to play."
5/5

Next: Same challenge, but no Artifacts

Quote from Xyre

Cultural Minister - UU
Creature - Human Wizard
Players can't play spells that share a creature type with a permanent they control.
2/2
"We value freedom, except for you."

Because if this card, I won't bother entering. That is just awesome.

Rotspoil Worms
Creature - Worm
Shroud
At the beginning of your upkeep, put a token into play that’s a copy of Rotspoil Worms.
Sacrifice a Worm: Put a +1/+1 counter on Rotspoil Worms.
Ashes to ashes, mulch to mulch.
1/1

Basic setup. Good, if you can toss out enough critters, otherwise its just a 1/1 for 3. Fits the uncommon slot well enough. 7/10

Blazing Skizzik RRR
Creature - Elemental [R]
Haste, Backdraft 2
At the end of turn, if Ashbound Skizzik has a -1/-1 counter on it, sacrifice it.
6/3

Next: Monoblack w/ Backdraft