Modification to this card:
Sacred NovaFrom 0 to 10 damage ->
1 to 10 damage. At the very least 1 damage... just "slightly" less frustrating really.
And possibly add a condition:
Non-multiclass Priest: +1 to the magic damage dealt. +1 to Heal effects. Permanent.
Since it is a Rare, I think it deserve an update to strengthen non-multiclass priest while any multi-class priest still maintain the original effect (+1 to min damage).