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

Relentless Assault

Helm of the Host

Nature's Will

Timeless Witness

How it works

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 Timeless Witness with haste.
4. When the Timeless 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.

This loop hinges on pairing combat-multiplying magic with recursive triggers to sustain endless assaults. When you cast Relentless Assault, you pave the way for an extra combat phase where Helm of the Host springs into action, minting a fresh token copy of Timeless Witness. That token's entry ability immediately plucks Relentless Assault right back out of your graveyard, ensuring you never run out of ammo. Meanwhile, Nature's Will capitalizes on your creatures connecting in combat to untap all your lands, funding the next iteration and letting you repeat the cycle indefinitely.