R4Stv Set 25 Preview: Shut up Sai!

[jousha]

At the least, it is a way to keep Sabiru in check if you're trying to pull something off on your next turn. I definitely can see it get mained in a few decks as a 1-of or 2-of.

[ChaosInsanist]

The ruling that Mastery adds on to the effect text of a Ninja and can be negated by, say, Kigiri or Dehydration, makes this decent, but not too OP.