Color Identity: U

Initial Card State
- Sewer-veillance Cam in your graveyard.
- All other permanents on the battlefield (Emry without summoning sickness).
Mana Needed
- ({U} magic symbol)
available.
Steps
- Activate Emry by tapping it, allowing you to cast Sewer-veillance Cam from your graveyard this turn.
- Cast Sewer-veillance Cam from your graveyard by paying ({U} magic symbol)
. - When Sewer-veillance Cam enters, it triggers, untapping Emry.
- Activate Urza's first ability by tapping Sewer-veillance Cam, adding ({U} magic symbol)
. - Activate Extruder by sacrificing Sewer-veillance Cam.
- Sewer-veillance Cam triggers, untapping a creature you control.
- Resolve the Extruder ability.
- Repeat.
Notes
- If you control an artifact creature, it can be untapped by the second Sewer-veillance Cam trigger, and then tapped via Urza to get infinite blue mana. Once you have infinite blue mana, you can either use it for Urza's second ability and/or to activate Sewer-veillance Cam's ability to draw cards.
Results
- Cast all spells in your library.
- Exile your library.
- Infinite +1/+1 counters on creatures you control.
- Infinite blue mana.
- Infinite mana creatures you control can produce.
- Infinite storm count.
- Infinite untap of creatures you control.
- Infinite card draw.
- Infinite draw triggers.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).