The Watcher in the Water + Wylie Duke, Atiin Hero + Heart of Kiran + Umbral Collar Zealot + Leyline of Transformation

The Watcher in the Water

Wylie Duke, Atiin Hero

Heart of Kiran

Umbral Collar Zealot

Leyline of Transformation

How it works

1. During an opponent's turn, activate Heart of Kiran by tapping Wylie Duke.
2. Wylie Duke triggers, causing you to draw a card and gain 1 life.
3. The Watcher's first ability triggers, creating a 1/1 Tentacle creature token.
4. Resolve the Heart of Kiran ability, causing it to become a creature until end of turn.
5. Activate Umbral Collar Zealot by sacrificing the Tentacle.
6. When the Tentacle dies, The Watcher's second ability triggers, untapping Wylie Duke and putting a stun counter on up to one permanent.
7. Resolve the Umbral Collar Zealot ability
8. Repeat.

This clever engine transforms instant-speed interaction on your opponent's turn into a self-sustaining loop, powered by Leyline of Transformation naming Kraken to ensure your creatures match the required types. Wylie Duke, Atiin Hero taps to pay the crew cost for Heart of Kiran, which immediately triggers Wylie Duke to draw you a card and gain life. That card draw triggers The Watcher in the Water to spawn a Tentacle, which you can then feed to Umbral Collar Zealot's sacrifice ability to surveil. Finally, the death of that Tentacle triggers The Watcher in the Water's second ability to untap Wylie Duke, allowing you to repeat the entire cycle for infinite card draw and near-infinite lifegain.