It's fine, we all make mistakes at one point or another. 'Tis human nature, after all.

Though I could see why. I run double Raiden and double Felis because the deck basically banks on drawing into Monster Gate/Reasoning to sack for game; if I can't draw those, then Raiden allows me a mill to get more Infernoids in the grave while Felis sets up well because she gets her effect off when milled.