RiBBz22
TYM's Confirmed Prophet/Time-Traveler
The way I do it is press b1 as soon as I see the trident re-appear in his hand because that is pretty much the exact time he recovers.Its a bit tight but delay the B1. The B1 hits really low so press the B1 when you see the opponent about to hit the ground.
EDIT: lol just saw this was already posted