Displacer Kitten + Intruder Alarm + Mourning

Displacer Kitten

Intruder Alarm

Mourning

How it works

1. Activate any number of creatures you control by tapping them, adding at least 1.
2. Cast Mourning by paying its mana cost, targeting any creature you control except Displacer Kitten.
3. Displacer Kitten triggers, blinking itself.
4. When Displacer Kitten enters the battlefield, Intruder Alarm triggers, untapping all creatures.
5. Resolve the Mourning spell.
6. Activate Mourning by paying , returning it from the battlefield to your hand.
7. Repeat.

This loop relies on the constant recycling of Mourning to trigger a cascade of magical effects that your opponents won't see coming. By casting and bouncing the Aura, you repeatedly trigger Displacer Kitten to blink itself, which in turn causes Intruder Alarm to untap all of your creatures so they can keep tapping for mana. It's a remarkably efficient way to generate infinite mana and storm count while continuously resetting your board state.