There are many aspects of a playable card here, so let's start with the obvious, the Darkness typing
I do find the concept of an elephant and a mouse having a circus act together funny and kinda cute, but thats as much good as I can say for this card
Beetrooper Fly & Sting X TRAP Counter When your opponent activates a monster effect, while you control a "Beetrooper" monster: Negate the activation, and if you do, destroy it
Its powerful and flexible, and could easily support a number of different archetypes
I chose to include a 1-of Sky Striker Mecha - Hornet Drones to help extend Link plays, but this along with the Gadgets could easily be dropped in favor of more Traps or hand traps
You only need card sleeves if you are playing in more competitive events or if you care about protecting cards