kismet2
Smash Ace
You can CG Wario to the ledge to force an air release. You can double jab>regrab or double jab spam. Profit
The Wario can UpB out if you mess up the jab cancel though so you'll have to be very careful.
EDIT: I forgot to mention that you can also dair out of a grab release so once you feel like you got enough repetitions out of it then you can regrab>spike
EDIT2: Wario can hold away to get out but puts him in a position to be edgeguarded also if you feel like the Wario will DI away from you, you still get a ftilt after double jab
The Wario can UpB out if you mess up the jab cancel though so you'll have to be very careful.
EDIT: I forgot to mention that you can also dair out of a grab release so once you feel like you got enough repetitions out of it then you can regrab>spike
EDIT2: Wario can hold away to get out but puts him in a position to be edgeguarded also if you feel like the Wario will DI away from you, you still get a ftilt after double jab