Sure, DotA 2 is a rare F2P MOBA that's fair. I mean, I find most of hero kinda meh, but I do appreciate their business model.

But a Card game based on DotA can only mean one thing:

- A F2P game. I can't imagine there being a different model

- A collectible card game. They won't innovate here.

- Buyable cosmetic, but not community made. It's not like they'll allow visual clutter on your cards.