Master Transmuter + Sewer-veillance Cam + Mana Vault + Mycosynth Lattice

Master Transmuter

Sewer-veillance Cam

Mana Vault

Mycosynth Lattice

How it works

1. Activate Mana Vault by tapping it, adding at least two mana which you can spend to activate Master Transmuter due to Mycosynth Lattice.
2. Activate Master Transmuter by paying , tapping it, and returning Mana Vault from the battlefield to your hand, putting Sewer-veillance Cam from your hand onto the battlefield.
3. When Sewer-veillance Cam enters, it triggers, allowing you to untap Master Transmuter.
4. Activate Master Transmuter by paying , tapping it, and returning Sewer-veillance Cam from the battlefield to your hand, putting Mana Vault from your hand onto the vattlefield.
5. When Sewer-veillance Cam leaves the battlefield, it triggers, allowing you to untap Master Transmuter.
6. Repeat.