If you make sure to be as low level as possible, with the worst def possible, and only use 1 claw to avoid clawblock it will trigger more often ;) :P
You need to take on fire absorb, go stand in flames until trigger.
Haven’t had any issues with it proc’ing mid duel
Ghost has 63% wb so it’s really 0.37% chance when being struck
And I believe it’s only being struck with melee attacks (not traps)
So sin v sin no issue. Every ghost should be using pro jewel in claw
Thank for the input!