User blog comment:Lesdin/Maria, the Astral Keeper/@comment-7709681-20160813003612/@comment-27802145-20160813005317

It isn't. ^.^

I could perhaps make it more clearer, but Bloodtinge is a Sole - Active (Maria is in her Sole paradigm when not dual wielding). The ult is also a Part - Active, meaning it can only be activated while dual wielding.