I just bought into MTGO with my favorite Vintage deck, DPS. I've built a list that I like for the maindeck, but since I've mainly played in proxied paper with a small number of opponents, I am a little unsure of sideboarding. I have a couple of questions, if there any experienced pilots who have insight I'd appreciate it.
I see a lot of Mindbreak Trap in sideboards. When exactly do you want to bring in this card? Against Xerox? Against PO?
I've played against a couple of decks, including hatebears/humans, where I wanted to kill Thalias and Lovinias. I see Collective Brutality, Karakas and Fatal Push in SBs, presumably for these matchups (and Chain of Vapor also does work here). I sort of like the idea of killing multiple things at once... is the CMC a dealbreaker on Toxic Deluge?