Grim Poppet + Mikaeus, the Unhallowed + Ravenous Intruder

BR identity

Commander legal

The 3 combo pieces

• Grim Poppet
• Mikaeus, the Unhallowed
• Ravenous Intruder

How to execute it

1. Activate Ravenous Intruder by sacrificing Grim Poppet.
2. When Grim Poppet dies, its undying ability triggers, returning it from your graveyard to the battlefield without a +1/+1 counter on it due to its replacement effect.
3. Resolve the Ravenous Intruder ability
4. Repeat.

What the combo produces

• Infinite -1/-1 counters
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinitely large creature until end of turn