Sydri, Galvanic Genius + Cauldron Familiar + Witch's Oven + Intruder Alarm

Sydri, Galvanic Genius

Cauldron Familiar

Witch's Oven

Intruder Alarm

How it works

1. Activate Sydri's first ability by paying , causing Witch's Oven to become an artifact creature until end of turn.
2. Activate Witch's Oven by tapping it and sacrificing Cauldron Familiar, creating a Food artifact token.
3. Activate Cauldron Familiar by sacrificing a Food token, returning it from your graveyard to the battlefield.
4. When Cauldron Familar enters the battlefield, it and Intruder Alarm trigger.
5. Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
6. Resolve the Intruder Alarm trigger, untapping all creatures.
7. Repeat from step 2.

This ingenious loop turns a modest kitchen appliance into an infinite life-drain engine by transforming Witch's Oven into an artifact creature with the help of Sydri, Galvanic Genius. Once it's animated, you can sacrifice Cauldron Familiar to the Oven to bake a fresh Food token, which in turn fuels the Familiar's ability to leap right back out of the graveyard. Every time the cat creeps back onto the battlefield, Intruder Alarm springs into action to untap all your creatures—including the animated Oven—readying the whole apparatus to repeat the cycle infinitely.