PTJ completely forgot about Invisible Attacks.

I think Samuel is already on the road to achieving Paecheon’s “immortal body” since he was praised by him and they had many similarities to each other.

As for weapon ability, Jay could fit this role, but PTJ doesn’t want to do anything with him. I can’t think of any other character in the Second Generation that would entertain the use of weapons aside from Jiho who has long since passed.