Nadir Kraken, Symmetry Matrix, and Mana Echoes

Prerequisites

• Nadir Kraken on the battlefield
• Symmetry Matrix on the battlefield
• Mana Echoes on the battlefield
• You have a way to draw a card
• available

Steps

1. Draw a card
2. Nadir Kraken triggers, causing you to pay to put a +1/+1 counter on it, and to create a 1/1 Tentacle creature token
3. The Tentacle enters the battlefield, triggering Mana Echoes and Symmetry Matrix
4. Resolve the Mana Echoes, adding for each Tentacle you control
5. Resolve the Symmetry Matrix trigger, causing you to pay to draw a card
6. Repeat from step 2

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite +1/+1 counters on Nadir Kraken
• Near-infinite colorless mana
• Near-infinite creature tokens
• Near-infinite ETB