Master Transmuter | Sewer-veillance Cam | Brass Infiniscope (and one other card)

Cards

Activate
Brass Infiniscope by tapping it, adding at least two mana which you can spend to activate
Master Transmuter due to
Agatha's Soul Cauldron.
Activate
Master Transmuter by paying ({U} magic symbol) , tapping it, and returning
Brass Infiniscope from the battlefield to your hand, putting
Sewer-veillance Cam from your hand onto the battlefield.
When
Sewer-veillance Cam enters, it triggers, allowing you to untap
Master Transmuter.
Activate
Master Transmuter by paying ({U} magic symbol) , tapping it, and returning
Sewer-veillance Cam from the battlefield to your hand, putting
Brass Infiniscope from your hand onto the vattlefield.
When
Sewer-veillance Cam leaves the battlefield, it triggers, allowing you to untap
Master Transmuter.
Repeat.

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.

This combo has been estimated to be Exhibition (Bracket 1+).