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

   Prerequisites

What do I need to start this combo?
Relentless Assault in hand.
All other permanents on the battlefield (Helm of the Host attached to Eternal Witness on the battlefield).
Lands you control can tap to produce at least 2.
You control a creature with power 1 or greater that can attack and that cannot be blocked by an opponent.

   Steps

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

   Results

What do I get from this combo?
Infinite ETB
Infinite storm count
Infinite combat phases
Infinite mana lands you control can produce
Infinite creature tokens with haste
Infinite magecraft triggers
Infinite combat damage
Infinite untap of lands you control
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