Ramos, Dragon Engine, Agatha's Soul Cauldron, Deadeye Navigator, and Cryptborn Horror

Prerequisites

• Ramos, Dragon Engine in exile
• Agatha's Soul Cauldron on the battlefield
• Deadeye Navigator on the battlefield
• Cryptborn Horror on the battlefield
• available

Steps

1. Activate Cryptborn Horror by paying , blinking it
2. Cryptborn Horror enters with at least five +1/+1 counters due to its replacement effect
3. When Cryptborn Horror enters, Deadeye Navigator's soulbond ability triggers, repairing it and Cryptborn Horror
4. Activate Cryptborn Horror using Ramos's ability by removing five +1/+1 counters from it, adding
5. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite blinking
• Infinite colored mana