Infinite combat damageInfinite combat phasesInfinite magecraft triggersInfinite mana creatures you control can produceInfinite storm countInfinite untap of creatures you control
How it works
Cast Surge to Victory by paying 4, exiling Savage Beating from your graveyard and giving creatures you control +5/+0 until end of turn.
Deal combat damage to an opponent with any creature you control.
Surge to Victory triggers, casting a copy of Savage Beating without paying its mana cost.
Resolve Savage Beating, untapping all creatures you control and giving you an additional combat phase after this one.