Rukarumel, Biologist + Intruder Alarm

Rukarumel, Biologist

Intruder Alarm

How it works

1. Activate all mana-producing creatures by tapping them, adding at least 3.
2. Activate Rukarumel by paying 3 and tapping it, creating a 1/1 Sliver creature token.
3. When the Sliver enters the battlefield, Intruder Alarm triggers, untapping all creatures.
4. Repeat.
5. If creatures you control can tap to produce at least 4, this combo nets infinite mana.

Rukarumel, Biologist is the linchpin that unites this engine, transforming all your nontoken creatures, spells, and cards in transit into Slivers in addition to their other types. Because of this blanket type-change, every creature you control now synergizes perfectly with Intruder Alarm's global untap trigger. Whenever you pay three mana and tap Rukarumel, Biologist to create a fresh 1/1 token, Intruder Alarm catches that creature entering the battlefield and snaps every single creature on your board back upright. If your mana-producing creatures generate enough juice to offset the activation cost, you can cycle this loop indefinitely to flood the board with tokens and generate infinite mana.