Skyshroud Ranger + Amulet of Vigor + Pemmin's Aura + Dimir Aqueduct

Skyshroud Ranger

Amulet of Vigor

Pemmin's Aura

Dimir Aqueduct

How it works

1. Activate Skyshroud Ranger by tapping it, putting Dimir Aqueduct onto the battlefield from your hand.
2. When Dimir Aqueduct enters the battlefield, it and Amulet of Vigor trigger.
3. Resolve the Amulet of Vigor trigger, untapping Dimir Aqueduct.
4. Activate Dimir Aqueduct by tapping it, adding .
5. Resolve the Dimir Aqueduct trigger from step 2, returning it to your hand from the battlefield.
6. Activate Pemmin's Aura's first ability by paying , untapping Skyshroud Ranger.
7. Repeat.

This ingenious loop turns a simple land drop into an infinite engine by exploiting the bounce clause of Dimir Aqueduct alongside the untap trigger of Amulet of Vigor. Once Skyshroud Ranger places the Aqueduct onto the battlefield, the Amulet immediately rights it so you can tap it for blue and black mana before its own trigger forces it back to your hand. To keep the engine running, Pemmin's Aura is enchanted onto the Ranger, allowing you to constantly untap the dryad using a sliver of the mana the Aqueduct just produced.