Artwork Pokemon VP - Frostilodon

I believe it's time to reveal the final form of Flynke: Frostilodon, hope you're not afraid to catch a cold ! I know that the Ice-Dark double type already exists with Sneasel and Weavile, but I really wanted to create a Sabertooth Tiger fakemon, and I think this type combination perfectly suit it !

For his movepool, I think he will have several attacks that he can use such as: Frost Fang, Crunch, Icicle Crash, Night Slash, Ice Shard, Knock Off, Shadow Claw, Foul Play, Aerial Ace, Sucker Punch, Direct Toxic , Hone Claws, and probably even more. However I would also like to give it a signature move, in order to make it more unique and special, maybe an ice type physical attack that would have a 100% accuracy that would be effective on fire types or that would have more chance to freeze the opponent ?

Tell me in the comments what you would do ? What kind of signature move would you give it? I'm curious to see your reviews !