Color Identity: W

Initial Card State
- All permanents on the battlefield (Halo Fountain without summoning sickness and Astral Cornucopia without summoning sickness and with two or more charge counters on it).
Mana Needed
- ({2} magic symbol)
available.
Steps
- Activate Karn twice by paying ({2} magic symbol)
, causing Halo Fountain and Astral Cornucopia to become a creature. - Activate Astral Cornucopia by tapping it, adding at least ({W} magic symbol)
({W} magic symbol)
. - Activate Halo Fountain's second ability by paying ({W} magic symbol)
({W} magic symbol)
, tapping it, and then untapping it and Astral Cornucopia, causing you to draw a card. - Repeat from step 2.
Notes
- With the excess mana, you can use it on Halo Fountain's first ability, tapping and untapping it to create creature tokens.
Results
- Infinite card draw.
- Near-infinite ETB.
- Infinite draw triggers.
- Near-infinite colored mana.
- Near-infinite creature tokens.
- Near-infinite untap of creatures you control.
- Near-infinite mana creatures you control can produce.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).