Spell breaker - some type of mystical object that occupies one tile, the range improves with upgrades. The spell breaker would “break” the attackers spell if that spell was dropped within the spell breaker’s range and render it ineffective. Possibly add a duration too so attackers do not completely lose it or cause a delay in the spells’ effects.

Shield/guard breaker - allow a one time opportunity to revenge that would bypass or break the other players active guard and shield. Give the item as an award through CWL. I don’t see many revenge opportunities in champion and above. I’m not sure about lower leagues. Possibly limit this for champion league and above.