Yes, this is the sort of devious Semblance use that Emerald ought to be doing. It's a sucker play tactic, the ultimate distraction, or a mental smoke cloud to cover a retreat. RWBY and friends got fair warning in Volume 5, so they ought to be prepared. But....it depends on the illusion and the person(s) it's targeting, right? I like the expressions on both the Pyrrha-illusion and Emerald herself. The illusion has just the expression to bring Ruby to a screeching halt both physically and mentally, and Emerald's "Gotcha sucker!" troll face is guaranteed to make the fans rage.

