In order to help us, please provide the following information (you can PM me the answer if you prefer, or send it to Customer Support in-game):
Which card?
Type and Subtype;
Is it related to a specific mechanic or an interaction between mechanics?
Which mechanic(s)?
Which Event/Battle?
BattleLog screenshot;
All cards in the deck and possible interactions that might have happened.
Thank you,
Marcela.