Grimgrin, Corpse-Born + Krenko, Mob Boss + Robaran Mercenaries

WUBR identity

Commander legal

The 3 combo pieces

• Grimgrin, Corpse-Born
• Krenko, Mob Boss
• Robaran Mercenaries

What must be in place

Robaran Mercenaries does not have summoning sickness.
You control at least two Goblins.

How to execute it

1. Activate Robaran Mercenaries using Krenko's ability by tapping it, creating at least two 1/1 Goblin creature tokens.
2. Activate Robaran Mercenaries using Grimgrin's ability by sacrificing a Goblin, untapping Robaran Mercenaries and putting a +1/+1 counter on it.
3. Repeat.

What the combo produces

• Infinite +1/+1 counters on most creatures you control
• Infinite creature LTB
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers