Relentless Assault + Helm of the Host + Nature's Will + Eternal Witness

Prerequisites

• You control a creature with power 1 or greater that can attack and that cannot be blocked by an opponent.
• Lands you control can tap to produce at least .

Steps

1. 1Activate any number of lands by tapping them, adding at least .
2. 2Cast Relentless Assault by paying , causing you to untap all creatures that attacked this turn and causing you to get an additional combat and main phase after this one.
3. 3At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Eternal Witness with haste.
4. 4When the Eternal Witness token enters, it triggers, returning Relentless Assault from your graveyard to your hand.
5. 5Deal combat damage to an opponent. Nature's Will triggers, untapping all lands you control.
6. 6Move to your next main phase and repeat from step 1.

Effects

• Infinite combat damage
• Infinite combat phases
• Infinite creature ETB
• Infinite creature tokens with haste
• Infinite magecraft triggers
• Infinite mana lands you control can produce
• Infinite storm count
• Infinite untap of lands you control