Pili-Pala's ability by paying ({2} magic symbol) and untapping it, adding one mana of any color.
Repeat.
Notes
Each activation of
Brass Infiniscope adds a delayed triggered ability that can draw you cards and gain life if you cast a spell with ({X} magic symbol) in its cost. If you wish to use these abilities, you'll want to stop the combo before getting too many triggers such that you'll deck yourself and lose the game. To gain life, you must spend at least ({2} magic symbol) for X when casting the spell.
Results
Infinite card draw.
Infinite colored mana.
Infinite colorless mana.
Near-infinite lifegain.
Near-infinite lifegain triggers.
Metadata
In 0 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).