The Watcher in the Water + Wylie Duke, Atiin Hero + Heart of Kiran + Thermopod + Xenograft

The Watcher in the Water

Wylie Duke, Atiin Hero

Heart of Kiran

Thermopod

Xenograft

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 Thermopod 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. Repeat.

This clever machinery turns instant-speed card drawing on an opponent's turn into a self-sustaining loop, anchored by Xenograft making every creature you control a Kraken so that The Watcher in the Water can target itself. Tapping Wylie Duke to crew Heart of Kiran triggers Wylie's draw ability, which in turn causes The Watcher to spawn a Tentacle token. You then feed that Tentacle to Thermopod for red mana, triggering The Watcher's death ability to untap Wylie Duke and keep the cycle spinning.