Dross Scorpion + Elemental Mastery + Viscera Seer + Encroaching Mycosynth

Dross Scorpion

Elemental Mastery

Viscera Seer

Encroaching Mycosynth

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 Encroaching Mycosynth, Dross Scorpion triggers, untapping the creature with Elemental Mastery attached.
4. Resolve the Viscera Seer ability.
5. Repeat.

This loop turns a massive token-generation engine into an infinite machine by cleverly turning your entire team into honorary artifacts via Encroaching Mycosynth. Because of that static type-granting effect, every token created by the creature enchanted with Elemental Mastery counts as an artifact creature when it hits the graveyard, satisfying the death condition for Dross Scorpion. You simply tap the enchanted creature to flood the board with hasting tokens, sacrifice them to Viscera Seer to fuel the loop and endlessly scry through your deck, and let Dross Scorpion untap your token generator so you can do it all over again.