The Watcher in the Water + Symmetry Matrix + Phyrexian Altar

Prerequisites

• You have a way to draw a card during an opponent's turn.

Steps

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

Effects

• Infinite card draw
• Infinite draw triggers
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite creature sacrifice triggers
• Near-infinite death triggers
• Near-infinite untap of some creatures you control