Genestealer Patriarch (Warhammer 40,000 Commander)

Creature Ñ Tyranid - Genestealer's Kiss Ñ Whenever this creature attacks, put an infection counter on target creature defending player controls.
Children of the Cult Ñ 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.