The Watcher in the Water + Wylie Duke, Atiin Hero + Heart of Kiran + Shilgengar, Sire of Famine + Runed Stalactite

The Watcher in the Water

Wylie Duke, Atiin Hero

Heart of Kiran

Shilgengar, Sire of Famine

Runed Stalactite

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 Shilgengar 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 Shilgengar ability
8. Repeat.

This ingenious loop uses Runed Stalactite attached to Wylie Duke, Atiin Hero to make him every creature type, allowing him to be tapped to crew Heart of Kiran without actually needing any power. Every time you tap Wylie Duke, his own ability triggers to draw a card and gain life, which in turn triggers The Watcher in the Water to spawn a 1/1 Tentacle creature token. You then feed that Tentacle to Shilgengar, Sire of Famine to generate a Blood token, whose death trigger lets The Watcher untap Wylie Duke to start the whole cycle anew.