Any use for Tentacruel?

I've powered up my 100% butterfree and changed his charged attack to bug buzz. If you are the collector like me go for it,

In short, not a use worth spending dust or a TM on right now.

I like the idea of powering up uncommon and underrated defenders.
But Tentacruel has only one bar charge moves, so the surprise may be cancelled when he goes down without firing it even once.
When you were blasted in the past, you were probably prestiging with weaker mons...