Cayth, Famed Mechanist + Mana Echoes + Glamermite

Cayth, Famed Mechanist

Mana Echoes

Glamermite

How it works

1. Activate Cayth by paying 2 and tapping it, creating a copy of the Glamermite token.
2. When the Glamermite token enters the battlefield, it and Mana Echoes trigger.
3. Resolve the Glamermite trigger, untapping Cayth
4. Resolve the Mana Echoes trigger, adding C for each creature you control that shares a type with the Glamermite token.
5. Repeat.