The Watcher in the Water + Symmetry Matrix + Ashnod's Altar

The Watcher in the Water

Symmetry Matrix

Ashnod's Altar

How it works

1. Draw a card during an opponent's turn.
2. The Watcher's first ability riggers, creating a 1/1 Tentacle creature token.
3. When the Tentacle enters the battlefield, Symmetry Matrix triggers.
4. Holding priority, activate Ashnod's Altar by sacrificing the Tentacle, adding CC.
5. When the Tentacle dies, The Watcher's second ability triggers, untapping up to one Kraken you control.
6. Resolve the Symmetry Matrix trigger, causing you to pay 1 to draw a card.
7. Repeat from step 2.

This crafty loop turns instant-speed card draw into an engine of continuous creation and sacrifice, anchored entirely by The Watcher in the Water's ability to spawn a Tentacle token whenever you draw on an opponent's turn. As each Tentacle enters the battlefield, Symmetry Matrix capitalizes on its equal power and toughness to let you pay a single colorless mana to draw a card, fueling the cycle. Before that draw resolves, you feed the Tentacle to Ashnod's Altar to generate the exact mana needed for the Matrix while simultaneously triggering The Watcher's dying trigger to untap the Kraken itself—keeping the engine primed to untap your colossal centerpiece or lock down opponents with stun counters.