Saheeli, the Sun's Brilliance + Mana Echoes + Bounding Krasis + Energy Refractor

Saheeli, the Sun's Brilliance

Mana Echoes

Bounding Krasis

Energy Refractor

How it works

1. Activate Saheeli by paying and tapping it, creating a token copy of Bounding Krasis with haste.
2. When the token Bounding Krasis enters the battlefield, it and Mana Echoes trigger.
3. Resolve the Bounding Krasis trigger, untapping Saheeli.
4. Holding priority, if you control less than four creatures that share a creature type with Bounding Krasis, 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 Bounding Krasis for each trigger resolved this way.
6. Activate Energy Refractor twice by paying 4, adding .
7. Repeat.