Initial Card State
- All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight and Geralf's Mindcrusher without a +1/+1 counter on it ).
Steps
- Activate Yahenni by sacrificing Geralf's Mindcrusher.
- When Geralf's Mindcrusher dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
- When Geralf's Mindcrusher enters, it triggers, causing a player to mill five cards.
- Activate Yahenni by sacrificing Geralf's Mindcrusher.
- When Geralf's Mindcrusher dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- When Geralf's Mindcrusher enters, it triggers, causing a player to mill five cards.
- Resolve both Yahenni abilities from step 1 and 4.
- Repeat.
Notes
- If Geralf's Mindcrusher starts with a +1/+1 counter on it, then you may start the combo from step 4 instead.
Results
- Infinite ETB.
- Infinite LTB.
- Infinite death triggers.
- Infinite mill.
- Infinite sacrifice triggers.
- Infinite self-mill.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).