Blinking Spirit + Intruder Alarm

Blinking Spirit

Intruder Alarm

How it works

1. Activate all mana producing creatures you control by tapping them, adding at least 3.
2. Cast Blinking Spirit by paying 3.
3. When Blinking Spirit enters, Intruder Alarm triggers, untapping all creatures.
4. Activate Blinking Spirit by paying 0, returning it from the battlefield to your hand.
5. Repeat.

This elegant loop turns the self-returning nature of Blinking Spirit into a massive engine by leaning entirely on Intruder Alarm's static untap trigger. Every time Blinking Spirit re-enters the battlefield, Intruder Alarm sees the creature arrive and untaps all creatures you control, including any mana producers you tapped along the way. Since Blinking Spirit’s ability costs zero to activate, you can bounce it straight back to your hand and recast it, endlessly cycling it to generate infinite untaps, storm count, and as much mana as your creatures are capable of producing.