Potent Casting

You have learned to protect your magic from anti magical effects such as dispel magic or counterspell.

When an effect attempts to counter a spell you cast it must treat your spell as at least one level higher than its casting, even if it uses a higher level spell slot than you.

When an effect attempts to end one of your spells early, such as with dispel magic or remove curse, it must treat your spell as though it were at least one level higher than theirs, even if they used a higher level spell slot than you.

When you enter an anti-magic field or similar effect you may make a Constitution Saving throw to preserve any currently active effects, the DC is either the original caster's save DC or 17 if there isn't one. On a successful save effects of the spells you have active upon entering the area perform as if the area were not there.