“Arcane Knowledge” card is buggy.
- It only draws 2 cards total per fight, not 2 cards every time it’s played as would be expected from its text.
- Cost reduction gets displayed for cards in hand when Arcane Knowledge is played, but not for cards subsequently drawn.
- It also applies cost reduction for its own cost. The first play actually costs 1 mana instead of the displayed 2, while still requiring that you have 2 mana available to spend. The second play costs 0 mana instead of 1, while still requiring that you have 1 mana available.
Playing on the current free version (4.3.6) for Windows.