In hand: fractal+sky blitz + 6 BL. On field, 6 mindgates and probably 6 hourglasses, so you can draw the chimera. Obviously, the opponent needs to have BL on top of their deck.
You can get 19 BLs, sky blitz, and then draw chimera for 190/0. Seems like you would be at it for a while though, until the RNG plays it out right.
Edit:
If it's two players, then things might be a little easier. Eternity's probably involved, and a sanc to negate the damage.