Question is kind of on topic, so I'll ask it here: I know class cards show up more often with Discover effects, but is there also some rule/algorithm regarding the actual cards' rarity? Like, a greater chance for common/rare then epic, etc.?
Class cards appear 4 times more than neutral cards. Apart from that, 100% random
Shield Slam
A card that can potentially do literally nothing.
Elise Starseeker
The original card of a character with multiple cards
Why did you mention all of the OP arena cards?
Class cards appear 4 times more than neutral cards. Apart from that, 100% random