Requires

Miirym, Sentinel Wyrm must be on the battlefield. Ganax, Astral Hunter must be in hand. Goro-Goro, Disciple of Ryusei must be on the battlefield. Mana Echoes must be on the battlefield. You control a modified creature that can attack this turn. Mana needed:

Steps

1. Cast Ganax by paying .
2. When Ganax enters the battlefield, it triggers itself, Mana Echoes and Miirym.
3. Resolve the Mana Echoes trigger, adding at least .
4. Resolve the Ganax trigger, creating a Treasure token.
5. Resolve the Miirym trigger, creating a nonlegendary token copy of Ganax.
6. When the token Ganax enters the battlefield, it triggers itself, the nontoken Ganax, and Mana Echoes.
7. Resolve the Mana Echoes trigger, adding at least .
8. Resolve both Ganax triggers, creating two Treasure tokens.
9. Move to your combat phase, and declare any modified creature you control as an attacker.
10. Holding priority, activate three Treasures by tapping and sacrificing them, adding .
11. Activate Goro-Goro's second ability by paying , creating a 5/5 Dragon Spirit creature token with flying.
12. When the Dragon Spirit enters the battlefield, it triggers Mana Echoes and both Ganax.
13. Resolve the Mana Echoes trigger, adding at least .
14. Resolve both Ganax triggers, creating two Treasure tokens.
15. Activate the Treasures by tapping and sacrificing them, adding .
16. Repeat from step 11.
17. Once you have infinite tokens, you may use Goro-Goro's first ability to give them haste.

Results