Elemental Mastery + Grimgrin, Corpse-Born

UBR identity

Commander legal

The 2 combo pieces

• Elemental Mastery
• Grimgrin, Corpse-Born

What must be in place

Elemental Mastery attached to Grimgrin.
Grimgrin does not have summoning sickness.

How to execute it

1. Activate Grimgrin by tapping it, creating a number of Elemental tokens with haste equal to Grimgrin's power.
2. Activate Grimgrin by sacrificing an Elemental token to untap Grimgrin and to put a +1/+1 counter on Grimgrin.
3. Repeat.

What the combo produces

• Infinite +1/+1 counters on a creature
• Infinite creature tokens with haste
• Infinite ETB