All Slivers have "Pay 2 life: Return this permanent to its owner's hand."

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Nashi deals combat damage to a player, exile the top card of each player's library. Until end of turn, you may play one of those cards. If you cast a spell this way, pay life equal to its mana value rather than paying its mana cost.

Create X 1/1 white Warrior creature tokens.

: Add .
, , Sacrifice a land: Destroy target nonbasic land.

Imprint — Whenever a player casts an instant or sorcery spell from their hand, exile it instead of putting it into a graveyard as it resolves.
At the beginning of your upkeep, if there are four or more cards exiled with this artifact, choose one of them at random. You may cast it without paying its mana cost.

: Add one mana of any color in your commander's color identity.

Target creature gets +1/+0 until end of turn and can't be blocked this turn.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Whenever a Swamp you control enters, choose one —
• You draw a card and you lose 1 life.
• This creature deals 2 damage to any target and you gain 2 life.

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)
Equip

Each player chooses a creature or planeswalker they control, then sacrifices the rest. Players can't cast creature or planeswalker spells until the end of your next turn.

Each other Human you control gets +1/+0 and has ward . (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

Reveal any number of green cards in your hand. Target creature gets +X/+X until end of turn, where X is the number of cards revealed this way.

Counter target spell.

Grenzo enters with X +1/+1 counters on it.
: Put the bottom card of your library into your graveyard. If it's a creature card with power less than or equal to Grenzo's power, put it onto the battlefield.

Counter target noncreature spell unless its controller pays .
Ferocious — If you control a creature with power 4 or greater, counter that spell instead.

Whenever you attack with one or more Zombies, draw that many cards, then discard that many cards. You gain that much life.
, Exile two cards from your graveyard: Create a tapped 2/2 black Zombie creature token.

Ward—Pay 2 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 2 life.)
: You may cast target Zombie creature card from your graveyard this turn.

You may pay rather than pay this spell's mana cost if there are thirteen or more creatures on the battlefield.
Each player sacrifices thirteen creatures of their choice.

When this creature enters, each player sacrifices a creature of their choice.

At the beginning of your end step, you may exile target creature you control, then return that card to the battlefield under your control.