As two actions, choose a creature, object, or magical effect within 20 meters. Make a skill check using your spellcasting skill. The Difficulty equals the spell Difficulty used to cast the spell + the spell’s effective mana. If you have identified the spell, you have advantage on this skill check. If there are multiple spells and if you have not identified them, the spell is chosen at random starting with the spell with the lowest mana cost.
On a success, the spell ends.
If you fail by 4 or less, the spell is suppressed for 1 minute.
A spell’s effective mana is normally the amount of mana it was cast with, including augmentation. If a feature lets a spell be cast without expending mana then the spell’s effective mana is its normal mana cost.
You gain a +1 bonus to your skill check for each additional mana expended.