Relentless Assault | Helm of the Host | Nature's Will

(and one other card)

Relentless Assault in hand.
All permanents on the battlefield (
Helm of the Host attached to
Timeless Witness).

Lands you control can tap to produce at least ({2} magic symbol) ({R} magic symbol) ({R} magic symbol) .

You control a creature with power 1 or greater that can attack and that cannot be blocked by an opponent.

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