I... hm. I actually have no idea. You can use a PP to get an extra effect die, and use a PP to use the effect die from a reaction to tag someone with something, but there's nothing one way or the other that suggests you can or can't do both.<br/><br/>So what the hell, why not? HOWEVER, you only have 1 PP on hand. (I would also be inclined to say that you'd have to assign the extraordinary success to the enemy you actually got the extraordinary success against, seeing as how you might also get an extraordinary success against Minerva's defense.) That, plus the opportunity (which I will indeed take), would let you try to both tag Minerva and ring out Arachne,<em>or</em>keep an extra die, but not both.<br/><br/>EDIT: Paging through the OOC to get at the various datafiles got tedious, so here's a datafiles thread:<br/>https://elliquiy.com/forums/index.php?topic=257955.0<br/><br/>You can add your own character/characters or not as you like (but it'd be nice if you did!)