Shadowverse

For me, Dasha is currently the worst nightmare; I even lose 70% of the time with an aggressive Sword deck. I guess she just clears the board faster than I can properly develop my strategy.

Well, yes, I wouldn't say I have a mega-win rate against Dashas with an aggressive Sword deck, but it feels like 50/50 (I wonder if there's an equivalent to a tracker bot for Swordhaven?), although I might be wrong. Right now, I prefer to "wear them down" with a control deck, taking advantage of strong followers – wolves, Monicas, Aurelias, Frontguards, and the Cyclone Blade helps too. It's also important to get some kind of heal in your hand, because at a certain point, many Dashas start going "yolo" and throwing Fireballs/Demonic Strikes at your face.

Added 6 hours 30 minutes later
Lol, I opened a Darkness pack, expecting to pull an Odin, but I got my third Pascal. This is the first legendary that I've gotten three copies of without crafting. It's funny, of course, but even if I start playing a Grunt deck, I doubt all three will be useful.