They definitely could’ve been a lot more clear, I thought leaving them vague would make it more immersive but overall I think that was the wrong decision. In general, the buffs are multiplicative to your attack/defense, max health bonuses at the cost of some health, or regular healing; while the debuffs are divisive to your attack/defense, straight damage, or a single example of adding a worthless card to your hand (this excludes the standard deck-modifying events). Glad you had fun!