The Watcher in the Water + Enchanted Evening + Setessan Champion

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 triggers, creating a 1/1 Tentacle creature token.
3. 3When the Tentacle enters the battlefield as an enchantment due to Enchanted Evening, Setessan Champion triggers, putting a +1/+1 counter on it and causing you to draw a card.
4. 4Repeat from step 2.

Effects

• Infinite +1/+1 counters on a creature
• Infinite card draw
• Infinite draw triggers
• Near-infinite creature ETB
• Near-infinite creature tokens