Severus is very fond of his new potionball gun, but he liked the firewhip spell when he was under the mask. It's very painful, rather freeze-or-flight inducing to look at unless your prospective victim's also seen Indiana Jones (uncommon even in on the liberals' side), very rarely accidentally lethal, and people don't think to trace it back to him.
Just saw this. Need to know Iago's intentions, please.