Biotransference + Dross Scorpion + Elemental Mastery + Umbral Collar Zealot

BR identity

Commander legal

The 4 combo pieces

• Biotransference
• Dross Scorpion
• Elemental Mastery
• Umbral Collar Zealot

How to execute it

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 Umbral Collar Zealot by sacrificing an Elemental.
3. When the Elemental dies as an artifact due to Biotransference, Dross Scorpion triggers, untapping the creature with Elemental Mastery attached.
4. Resolve the Umbral Collar Zealot ability.
5. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite surveil