Hopefully at Extreme Force then a Vendread monster which gives Slayer the additional effect he can not be destroyed by card effects / Banish negate / Not be destroyed by battle, for example. Then he becomes really dangerous.
Since we have not got a new ritual spell, the probably at Extreme Force surely with a new ritual monster.
Ahh crap now months wait again to the next support ..
I didn't find the right solution from the Internet.