My Little Pony: Friendship is Magic - Rainbow Power Form!

Blame Hasbro marketing department,

I actually want to see more of this. What kind of power do they exactly have? Are they practically gods now (ie defeating Terik in his most powerful form in a few seconds), will Rainbow Power function like the elements of harmony? Also i hope twi gets a celestial main again (it was hinted at when she received all the alicorn magic). Remember this either opinion or hopefully speculation now….