Infinite card drawInfinite draw triggersNear-infinite damageNear-infinite magecraft triggersNear-infinite mana creatures you control can produceNear-infinite storm countNear-infinite untap of creatures you control
How it works
Activate all mana-producing creatures you control by tapping them, adding at least 1.
Activate Charnelhoard Wurm by tapping it, dealing 1 damage to an opponent.
Charnelhoard Wurm triggers, returning Benefactor's Draught to your hand from your graveyard.
Cast Benefactor's Draught by paying 1, untapping all creatures you control and causing you to draw a card.
Repeat.
If creatures you control can tap to produce at least 2, this combo will net near-infinite mana.