Jinnie Fay, Jetmir's Second + Thorin, King of Durin's Folk + Xenograft

Jinnie Fay, Jetmir's Second

Thorin, King of Durin's Folk

Xenograft

How it works

1. Cast Thorin by paying 3.
2. When Thorin enters, it triggers, creating a 2/2 Cat creature token with haste due to Jinnie Fay.
3. When the Cat enters as a Dwarf due to Xenograft, Thorin triggers, creating a 2/2 Cat creature token with haste due to Jinnie Fay.
4. Repeat step 3.

This clever loop starts the moment you cast Thorin, King of Durin's Folk, whose entry triggers Jinnie Fay, Jetmir's Second to replace its usual reward with a hasty 2/2 Cat token instead of a standard Treasure. Because Xenograft is busy declaring every creature you control to be a Dwarf, that newly minted Cat immediately counts as a Dwarf itself, triggering Thorin all over again. This creates a perpetual cycle of feline creation, fueling an endless swarm of hasty attackers where every token feeds right back into the engine.