Sanctum Weaver + Freed from the Real

Prerequisites

Freed from the Real attached to Sanctum Weaver. Sanctum Weaver does not have summoning sickness.

Steps

1. Activate Sanctum Weaver by tapping it, adding {U}{U}.
2. Activate Freed from the Real's second ability by paying {U}, untapping Sanctum Weaver.
3. Repeat for infinite blue mana.
4. Once you have infinite blue mana, you may activate Sanctum Weaver an infinitely large number of times, adding infinite colored mana.