Saheeli, the Sun's Brilliance + Mana Echoes + Urn of Godfire + Sparring Mummy

Saheeli, the Sun's Brilliance

Mana Echoes

Urn of Godfire

Sparring Mummy

How it works

1. Activate Saheeli by paying and tapping it, creating a token copy of Sparring Mummy with haste.
2. When the token Sparring Mummy enters the battlefield, it and Mana Echoes trigger.
3. Resolve the Sparring Mummy trigger, untapping Saheeli.
4. Holding priority, if you control less than four creatures that share a creature type with Sparring Mummy, repeat steps 1 through 3 one additional time.
5. Resolve all Mana Echoes triggers, adding C for each creature you control that shares a creature type with Sparring Mummy for each trigger resolved this way.
6. Activate Urn of Godfire twice by paying 4, adding .
7. Repeat.