Ardoz, Cobbler of War + Mana Echoes + Phyrexian Altar

Ardoz, Cobbler of War

Mana Echoes

Phyrexian Altar

How it works

1. Activate Ardoz by paying 3, creating a 1/1 Goblin creature token with haste.
2. The Goblin enters the battlefield, triggering Ardoz and Mana Echoes.
3. Resolve the Ardoz trigger, giving the Goblin +2/+0 until end of turn.
4. Resolve the Mana Echoes trigger, adding C for each Goblin you control.
5. Activate Phyrexian Altar by sacrificing the Goblin token, adding .
6. Repeat.