Mikaeus, the Unhallowed + The Reaper, King No More + Yahenni, Undying Partisan

BRG identity

Commander legal

The 3 combo pieces

• Mikaeus, the Unhallowed
• The Reaper, King No More
• Yahenni, Undying Partisan

How to execute it

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

What the combo produces

• Infinite -1/-1 counters
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite recursion of non-Human creatures you control
• Infinite sacrifice triggers