The Watcher in the Water + Verity Circle + Junk Winder

The Watcher in the Water

Verity Circle

Junk Winder

How it works

1. During an opponent's turn, after their untap step, activate Verity Circle by paying 4, tapping target creature an opponent controls without flying.
2. Verity Circle triggers, causing you to draw a card.
3. The Watcher in the Water's first ability triggers, creating a 1/1 Tentacle creature token.
4. When the Tentacle enters the battlefield, Junk Winder triggers, tapping target creature an opponent controls.
5. Repeat from step 2 for each remaining creature opponents control.
6. Repeat from step 1 after each of your turns.