Sudden Death

Split second (As long as this spell is on the stack, players can’t cast spells or activate abilities that aren’t mana abilities.)
Target creature gets -4/-4 until end of turn.

Hivestone

Creatures you control are Slivers in addition to their other creature types.

Traitor’s Clutch

Target creature gets +1/+0, becomes black, and gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Stuffy Doll

Indestructible
As Stuffy Doll enters the battlefield, choose a player.
Whenever Stuffy Doll is dealt damage, it deals that much damage to the chosen player.
: Stuffy Doll deals 1 damage to itself.

Gristle Grinner

Whenever a creature dies, Gristle Grinner gets +2/+2 until end of turn.

Phyrexian Snowcrusher

Phyrexian Snowcrusher attacks each combat if able.
: Phyrexian Snowcrusher gets +1/+0 until end of turn. ( can be paid with one mana from a snow permanent.)

Gleancrawler

( can be paid with either or .)
Trample
At the beginning of your end step, return to your hand all creature cards in your graveyard that were put there from the battlefield this turn.

Strands of Undeath

Enchant creature
When Strands of Undeath enters the battlefield, target player discards two cards.
: Regenerate enchanted creature.

Twilight Drover

Whenever a creature token leaves the battlefield, put a +1/+1 counter on Twilight Drover.
, Remove a +1/+1 counter from Twilight Drover: Create two 1/1 white Spirit creature tokens with flying.

Twilight Drover

Whenever a creature token leaves the battlefield, put a +1/+1 counter on Twilight Drover.
, Remove a +1/+1 counter from Twilight Drover: Create two 1/1 white Spirit creature tokens with flying.

Pus Kami

, Sacrifice Pus Kami: Destroy target nonblack creature.
Soulshift 6 (When this creature dies, you may return target Spirit card with converted mana cost 6 or less from your graveyard to your hand.)

Shimatsu the Bloodcloaked

As Shimatsu the Bloodcloaked enters the battlefield, sacrifice any number of permanents. Shimatsu enters the battlefield with that many +1/+1 counters on it.

Cranial Extraction

Choose a nonland card name. Search target player’s graveyard, hand, and library for all cards with that name and exile them. Then that player shuffles their library.