It's a Venus Flytrap, give it a Bug version of Storm Drain that boosts its attack.

>Insectivore: The Pokémon draws in all Bug-type moves. Instead of taking damage from them, its Atk stat is boosted.

Let it learn some bite attacks like Thunder and Fire Fang to deal with flying and ice types.

Jaw Lock instead of Crunch.

Snap Trap would help too.

It's a Venus Flytrap!