Saheeli, the Sun's Brilliance + Mana Echoes + Signpost Scarecrow + Giant-Sized Flying Ant

Saheeli, the Sun's Brilliance

Mana Echoes

Signpost Scarecrow

Giant-Sized Flying Ant

How it works

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