Drowned Rusalka + Earthcraft + The Watcher in the Water

GU identity

Commander legal

The 3 combo pieces

What must be in place

You control at least one Tentacle.
It is not your turn.
The Watcher has zero stun counters on it.
You control a basic Island.

How to execute it

  1. During an opponent's turn, activate Earthcraft by tapping The Watcher, untapping a basic Island you control.
  2. Activate the Island by tapping it, adding {U}.
  3. Activate Drowned Rusalka by paying {U} and sacrificing a Tentacle.
  4. When the Tentacle dies, The Watcher's second ability triggers, untapping itself.
  5. Resolve the Drowned Rusalka trigger, causing you to rummage.
  6. The Watcher's first ability triggers, creating a 1/1 Tentacle creature token.
  7. Repeat.

What the combo produces