Biomancer's Familiar + Paradise Mantle + Stonybrook Schoolmaster + Umbral Mantle

GWU identity

Commander legal

The 4 combo pieces

• Biomancer's Familiar
• Paradise Mantle
• Stonybrook Schoolmaster
• Umbral Mantle

What must be in place

Stonybrook Schoolmaster does not have summoning sickness.
Umbral Mantle and Paradise Mantle attached to Stonybrook Schoolmaster.

How to execute it

1. Activate Stonybrook Schoolmaster by tapping it, adding {1}.
2. Stonybrook Schoolmaster triggers, creating a 1/1 Merfolk Wizard creature token.
3. Activate Stonybrook Schoolmaster by paying {1} and untapping it, giving it +2/+2 until end of turn.
4. Repeat.

What the combo produces

• Infinite creature tokens
• Infinite ETB
• Infinitely large creature until end of turn