The number of spells you've cast is counted only as Murmuration's last ability resolves
Clefairy's attack, Full Moon Rondo, is incredibly cheap, costing only one Psychic Energy and one Colorless
These three types collectively include around 120 creatures, so theyre not as niche as they sound on the surface
Its better, actually, since theres no color pip requirement for its activation
It's exactly what you need when you're behind on life totals but trying to stabilize the board right before you're able to take full advantage of your plan
You'll be able to cast cards you exile if timing rules allow (so, instants, mostly), but you won't be able to play a land that turn