Is 25% Crit Bonus. In over a year of playing this game, I have never equipped one of these. At least the 20 ISO ads up over time. The Critical Boosts just vanish because I can’t hold more than 30 of them.
I use this with 2* Magneto/Polarity Shift. Not often enough to not pretty much always have 20+, but especially in say The Gauntlet, you might as well. 2* Magneto/2* Storm/2* Hawkeye with 5x Crit Boosts, 3x +1 all Boosts, and 3x Blue/Purple makes pretty quick work of most nodes.
Even though I’m getting sick of receiving the 25% critical bonus, I must disagree. At least I have some use for the critical bonus. 20 ISO is like a slap in the face, especially if you’ve just completed a difficult battle. It isn’t a reward; it’s cr@pola!