Etrata, the Silencer can't be blocked.
Whenever Etrata deals combat damage to a player, exile target creature that player controls and put a hit counter on that card. That player loses the game if they own three or more exiled cards with hit counters on them. Etrata's owner shuffles Etrata into their library.

Target player loses 2 life.
Escape—, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Flying
: Regenerate Ghost Ship.

Whenever you cast a blue, black, or red spell, you gain 1 life.

Revolt — When Hidden Herbalists enters the battlefield, if a permanent you controlled left the battlefield this turn, add .

Flying, lifelink
Creatures entering the battlefield or dying don't cause abilities to trigger.

When Keeper of Keys enters the battlefield, you become the monarch.
At the beginning of your upkeep, if you're the monarch, creatures you control can't be blocked this turn.

Kicker (You may pay an additional as you cast this spell.)
When Krosan Druid enters the battlefield, if it was kicked, you gain 10 life.

: Add for each card you've drawn this turn.
Partner (You can have two commanders if both have partner.)

When Liliana's Contract enters the battlefield, you draw four cards and you lose 4 life.
At the beginning of your upkeep, if you control four or more Demons with different names, you win the game.

[+1]: Mill three cards. If at least one Zombie card is milled this way, each opponent loses 2 life and you gain 2 life.
[−2]: Target creature gets -X/-X until end of turn, where X is the number of Zombies you control.
[−3]: You may cast Zombie spells from your graveyard this turn.

Sacrifice Loyal Retainers: Return target legendary creature card from your graveyard to the battlefield. Activate this ability only during your turn, before attackers are declared.

Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)

Double strike, indestructible
Oketra the True can't attack or block unless you control at least three other creatures.
: Create a 1/1 white Warrior creature token with vigilance.

When Paladin of the Bloodstained enters the battlefield, create a 1/1 white Vampire creature token with lifelink.

At the beginning of your upkeep, you may reveal a Dinosaur card from your hand. If you do, you gain 2 life.
, Sacrifice Priest of the Wakening Sun: Search your library for a Dinosaur card, reveal it, put it into your hand, then shuffle your library.

: Exile target creature. Then if there are three or more cards exiled with Profane Procession, transform it.

Whenever you draw a card, each opponent mills two cards.

: Quilled Wolf gets +4/+4 until end of turn.