Genestealer Patriarch

Mana cost: {4}{U}
Type: Creature — Tyranid
Power / toughness: 4 / 4
Set: Warhammer 40,000 Commander #22★ (rare)

Genestealer's Kiss — Whenever this creature attacks, put an infection counter on target creature defending player controls.
Children of the Cult — Whenever a creature with an infection counter on it dies, you create a token that's a copy of that creature, except it's a Tyranid in addition to its other types.

Genestealer Patriarch has 2 printings, first in Warhammer 40,000 Commander (2022). EDHREC ranks it #15,814 among Commander cards. It appears most in The Swarmlord decks (1,387 on EDHREC). 1 public deck on TCG runs it. It has 6 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: not legal

Public decks that run Genestealer Patriarch

Tyranid Swarm - Warhammer 40,000 Commander, led by The Swarmlord

Commanders that run Genestealer Patriarch most

Deck counts from EDHREC.

Often played with Genestealer Patriarch

Cards that show up in the same decks on EDHREC.

Rulings

2022-10-07: If you control more than one Genestealer Patriarch as a creature with an infection counter on it dies, each one's ability will trigger, and you will make two tokens that are copies of it.
2022-10-07: If the copied creature had {X} in its mana cost, X is 0.
2022-10-07: The token copies the creature as it last existed on the battlefield before it died, not as it exists in the graveyard.
2022-10-07: If the copied creature was copying something else, then the token enters the battlefield as whatever that creature copied.
2022-10-07: Any enters-the-battlefield abilities of the copied creature will trigger when the token enters the battlefield. Any "as [this creature] enters the battlefield" or "[this creature] enters the battlefield with" abilities of the creature will also work.
2022-10-07: The token copies exactly what was printed on the original creature and nothing else (unless that creature is copying something else; see below). It doesn't copy whether that creature was tapped or untapped, whether it had any counters on it or Auras or Equipment attached to it, or any non-copy effects that had changed its power, toughness, types, color, or so on.