Isochron Scepter + The Blackstaff of Waterdeep + To Arms!
Isochron Scepter
The Blackstaff of Waterdeep
To Arms!
Infinite card drawInfinite draw triggersNear-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 3.
Activate The Blackstaff of Waterdeep by paying 1 and tapping it, causing Isochron Scepter to become a 4/4 artifact creature.
Activate Isochron Scepter by paying 2 and tapping it, casting a copy of To Arms! without paying its mana cost.
Resolve To Arms!, untapping all creatures you control and causing you to draw a card.
Activate all mana-producing creatures you control by tapping them, adding at least 3.