Board Thread:Episode Discussion/@comment-4141313-20181124081953/@comment-26397825-20181128042927

The point SYUTK is making is that Weiss has consitently shown that she doesn't have good enough control over Dust without her semblance to perfectly light every candle without even waving her sword in their direction.

Controlling each little wisp to perfectly light every candle in the room requires a lot more control that tossing large ice shards and fireballs in the general direction of enemies, and yet she can't do the latter without her semblance or pointing Myrtenaster at them.