https://store.steampowered.com/app/1681840/Abalon_Roguelike_Tactics_CCG/

It's a roguelite deckbuilder (which I usually hate) but this one, along with Tainted Grail Conquest (it's not exactly a hidden gem to list here however) I liked a lot. It's basically a hybrid of deckbuilder-style spells and turn-based tactical combat with units. If you like old DnD-inspired tactical games, you'll probably like this. Art style looks like a mobile game which is meh but the game itself is pretty cool, especially with its attack/combo system and the ability to recruit two permanent niggas to join your party which gives you a lot of tactical options. It's also on Android and iOS, and it's pretty much one of the best games I ever played on my phone (besides old remakes like FFT or Tactics Ogre), can't shill this enough