Dross Scorpion + Elemental Mastery + Viscera Seer + Mycosynth Lattice

Dross Scorpion

Elemental Mastery

Viscera Seer

Mycosynth Lattice

How it works

1. Activate the creature with Elemental Mastery attached by tapping it, creating a number of 1/1 Elemental creature tokens with haste equal to its power.
2. Activate Viscera Seer by sacrificing an Elemental.
3. When the Elemental dies as an artifact due to Mycosynth Lattice, Dross Scorpion triggers, untapping the creature with Elemental Mastery attached.
4. Resolve the Viscera Seer ability.
5. Repeat.

This intricate loop turns any creature enchanted with Elemental Mastery into a factory for an endless swarm of hasty tokens, fueled entirely by the card-manipulating sacrifice outlet Viscera Seer. The real glue holding this engine together is Mycosynth Lattice, which transforms every permanent on the battlefield into an artifact—meaning that when you sacrifice your newly minted tokens, they count as artifact deaths. That artifact typing is precisely what wakes up Dross Scorpion, whose trigger catches each death to instantly untap your elemental-generating creature and ready it to tap all over again.