Cogwork Assembler + Myr Battlesphere + Mana Echoes

Cogwork Assembler

Myr Battlesphere

Mana Echoes

How it works

1. Activate Cogwork Assembler by paying 7, creating a token copy of Myr Battlesphere with haste.
2. When the Myr Battlesphere token enters the battlefield, it and Mana Echoes trigger.
3. Resolve the Myr Battlesphere trigger, creating four 1/1 Myr artifact creature tokens.
4. When the Myr enter the battlefield, Mana Echoes triggers four times.
5. Resolve all Mana Echoes triggers from steps 2 and 4, adding CCCCC for each Myr you control.
6. Repeat.
7. Once you have infinite mana, you may target any artifact instead using Cogwork Assembler's ability.
8. Activate Cogwork Assembler three times by paying 7 three times, creating three token copy of Cogwork Assembler with haste.
9. The token copies of Cogwork Assembler enter the battlefield triggering Mana Echoes three times, adding twelve C.
10. Activate Cogwork Assembler by paying 7, creating a token copy of Cogwork Assembler with haste.
11. The token copy of Cogwork Assembler enters the battlefield triggering Mana Echoes, adding CCCCC.
12. Activate Cogwork Assembler by paying 7, creating a token copy of Cogwork Assembler with haste.
13. The token copy of Cogwork Assembler enters the battlefield triggering Mana Echoes, adding CCCCCC.
14. Activate Cogwork Assembler by paying 7, creating a token copy of Cogwork Assembler with haste.
15. The token copy of Cogwork Assembler enters the battlefield triggering Mana Echoes, adding at least CCCCCCC.
16. Repeat from step seven.