Requires

Squee, the Immortal must be on the battlefield. Mana Echoes must be on the battlefield. Ashnod's Altar must be on the battlefield. Gemstone Array must be on the battlefield. You control at least three Goblins. Mana needed:

Steps

1. Activate Ashnod's Altar by sacrificing Squee, adding .
2. Cast Squee from your graveyard by paying .
3. When Squee enters the battlefield, Mana Echoes triggers, adding for each Goblin you control.
4. Activate Gemstone Array's first ability twice by paying , putting two charge counters on it.
5. Activate Gemstone Array's second ability twice by removing two charge counters from it, adding .
6. Repeat.
7. If you control four or more Goblins, this combo nets infinite mana.

Results