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

The Watcher in the Water

Wylie Duke, Atiin Hero

Heart of Kiran

Umbral Collar Zealot

Conspiracy

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 intricate engine relies on Conspiracy to rewrite creature types, ensuring that Umbral Collar Zealot's sacrifice fodder is recognized as a Tentacle by The Watcher in the Water. By tapping Wylie Duke, Atiin Hero to crew Heart of Kiran, you trigger Wylie Duke's draw ability during an opponent's turn, which in turn commands The Watcher to spawn a Tentacle token. You then feed that token to Umbral Collar Zealot to trigger The Watcher's second ability, untapping Wylie Duke so the loop can start all over again.