Awakened Voodoo, Gulli or unduped Blade to Rank 4

Knightarthus

I recently got a mystic 5* awakening Gem from LoL. I believe it’s to be used on Voodoo not Gulli but wanted to make sure. Also not sure if Unduped Blade is still better than awakened Voodoo.

Knightarthus

Kinda surprised by the responses, didn’t know Voodoo was that good. Also forgot to mention I have Morningstar that I can use the gem on instead. Not sure if that changes anything.