Bartolomé del Presidio + Chaos Spewer + Mikaeus, the Unhallowed

RWB identity

Commander legal

The 3 combo pieces

• Bartolomé del Presidio
• Chaos Spewer
• Mikaeus, the Unhallowed

How to execute it

1. Activate Bartolomé del Presidio by sacrificing Chaos Spewer.
2. When Chaos Spewer dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. When Chaos Spewer enters the battlefield, it triggers, putting a -1/-1 counter on it.
4. Resolve the Bartolomé del Presidio ability
5. Repeat.

What the combo produces

• Infinite +1/+1 counters on a creature
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers