I've seen the gameplay and played it with my friends. And man, game has been great at first. Interesting gameplay concept (except for random attack targets and creeps placement) and card design with my favourite dota characters. But for some reason Valve abandoned the game and left it with no incentive to play. This should've been an early access game.
Valve has shot themselves in the foot this time, just like all other major game company in 2018 including Blizzard with Diablo immortal bullshit.