Does anyone know the percentage win-rate for the reward spins? I have had over 30 games in which I finished with full HP (maybe 40, even) and have won a single card. That card was a Forest Spirit. I do not see the difference in spins between games that I win with full HP and games that I finish not at full health.
It would help me if other could tell me how they fare in terms of spin rewards, by posting which cards they have won, and the ratio of cards won to total spins.
Thanks.
Winning a game with full health does not affect your spin. The chance of winning cards from the spin is the same whether you win with 1 HP or 100.
How are the chances of winning cards decided, then? Basically, you have a bigger chance of winning a card if your opponent has a lot of copies of a card in their deck. For example, you have a higher chance of winning a card if you opponent's deck has 6 Graboids and 24 Pillars than if their deck contained 30 different creatures.
However, the chances of winning a Pillar are automatically lowered in the game so you have a better chance of winning a more valuable card.
Overall, you have about a 1/9 chance of winning a card from a spin. You are just having some very bad luck, but it will get better if you play more.