Level up or new move?

I got this bad boy at the recent abysmal event.

I have enough rare candies to either level it up (obviously not to max cause I dont have enough XL candy) oooor teach it a second move.

I cant make up my mind and cant seem to find any guidance online on what is preferred.

(Also, I dont know if I wanna use it mainly for PvP or PvE but like I dont have any good ice type attackers anyway)