Mikaeus, the Unhallowed + Woodfall Primus + Ashnod's Altar

Prerequisites

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Steps

1. 1Activate Ashnod's Altar by sacrificing Woodfall Primus.
2. 2When Woodfall Primus dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. 3When Woodfall Primus enters, it triggers, destroying a noncreature permanent.
4. 4Activate Ashnod's Altar by sacrificing Woodfall Primus.
5. 5When Woodfall Primus dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
6. 6When Woodfall Primus enters, it triggers, destroying a noncreature permanent.
7. 7Repeat.

Effects

• Destroy any number of noncreature permanents
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Lock