Emry, Lurker of the Loch + Displacer Kitten + Welding Jar + Corridor Monitor

Emry, Lurker of the Loch

Displacer Kitten

Welding Jar

Corridor Monitor

How it works

1. Activate Emry by tapping it, targeting Welding Jar.
2. Cast Welding Jar from your graveyard by paying 0.
3. Displacer Kitten triggers, blinking Corridor Monitor.
4. When Corridor Monitor enters, it triggers, untapping Emry.
5. Activate Welding Jar by sacrificing it.
6. Repeat.

This elegant loop revolves around Emry, Lurker of the Loch pulling Welding Jar from the graveyard for free, which triggers Displacer Kitten to blink Corridor Monitor. As Corridor Monitor re-enters the battlefield, its ability untaps Emry, allowing the whole process to start over. Meanwhile, Welding Jar sits ready to be sacrificed or recast indefinitely, generating an endless storm count alongside infinite artifact and creature entry and exit triggers.