Denji, Chainsaw Man

Whenever a Warrior attacks, you may have its
controller create a 1/1 white Warrior creature token
that's tapped and attacking.
{w}{u}{b}{r}{g}: Untap all attacking creatures. They
gain trample, lifelink, and haste until end of turn.
After this phase, there is an additional combat phase.
Activate only during combat.

"I am willing to die to keep living like this. - Denji