Skyshroud Ranger + Amulet of Vigor + Pemmin's Aura + Izzet Boilerworks

Skyshroud Ranger

Amulet of Vigor

Pemmin's Aura

Izzet Boilerworks

How it works

1. Activate Skyshroud Ranger by tapping it, putting Izzet Boilerworks onto the battlefield from your hand.
2. When Izzet Boilerworks enters the battlefield, it and Amulet of Vigor trigger.
3. Resolve the Amulet of Vigor trigger, untapping Izzet Boilerworks.
4. Activate Izzet Boilerworks by tapping it, adding .
5. Resolve the Izzet Boilerworks 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 clever engine turns the normally-sluggish bounce lands into a rapid-fire mana source by exploiting a few clever interlockings. When you use Skyshroud Ranger to drop Izzet Boilerworks straight from your hand, Amulet of Vigor immediately steps in to untap the bounceland before its own return trigger forces it back to your hand. Tapping Izzet Boilerworks for blue and red mana funds the whole loop, while Pemmin's Aura keeps untapping Skyshroud Ranger so you can do it all over again.