During an opponent's turn, activate Imagecrafter by tapping it, causing Wylie Duke to become a Kraken until end of turn.
Activate Heart of Kiran by tapping Wylie Duke.
Wylie Duke triggers, causing you to draw a card and gain 1 life.
The Watcher's first ability triggers, creating a 1/1 Tentacle creature token.
Resolve the Heart of Kiran ability, causing it to become a creature until end of turn.
Activate Shilgengar by sacrificing the Tentacle.
When the Tentacle dies, The Watcher's second ability triggers, untapping Wylie Duke and putting a stun counter on up to one permanent.
Resolve the Shilgengar ability
Repeat from step 2
This ingenious loop turns Wylie Duke, Atiin Hero into a one-man engine by using Imagecrafter to temporarily rewrite his creature type to Kraken, allowing him to legally crew Heart of Kiran while maintaining his vital typing. Tapping Wylie Duke to crew the Vehicle triggers his ability to draw a card, which in turn causes The Watcher in the Water to churn out a 1/1 Tentacle token during your opponent's turn. You can then feed that Tentacle to Shilgengar, Sire of Famine to generate a Blood token; when the Tentacle dies, The Watcher in the Water's second ability triggers to untap Wylie Duke, letting you tap him right back down to crew the Vehicle all over again.