Whenever Bloodmist Infiltrator attacks, you may sacrifice another creature. If you do, Bloodmist Infiltrator can't be blocked this turn.

Choose up to two target permanent cards in your graveyard that were put there from the battlefield this turn. Return them to the battlefield tapped.

Menace
At the beginning of your precombat main phase, you may sacrifice a creature. When you do, choose a nonland card name, then target player reveals their hand and discards all cards with that name.

Draw two cards, then discard two cards. Untap up to three lands.

Equipped creature gets +2/+0.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Whenever your opponents are dealt combat damage, if any of that damage was dealt by a Warrior, you draw a card and you lose 1 life.

: Creatures you control get +1/+1 until end of turn.

Whenever Ogre Errant attacks, another target attacking Knight gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Prevent all combat damage that would be dealt this turn.

Scry 2, then draw a card.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying
At the beginning of combat on your turn, you may pay . When you do, put a +1/+1 counter on another target creature you control, and that creature gains flying until end of turn.

Sliver creatures you control have "Whenever this creature deals combat damage to a player, put a +1/+1 counter on it."

Lifelink
When Vengeant Vampire dies, destroy target creature an opponent controls and you gain 4 life.