Casting Time: Reaction , Range: 60 feet , Components: V (Vocal) - S (Somatic) , Duration: Instantaneous
Effect
When you see a creature within range casting a spell;
You attempt to copy and cast a spell that you can see being cast. If the targeted spell is 2nd level or lower, then the spell is automatically copied. Copying a spell of 3rd level or higher requires a successful ability check using your spellcasting ability. The DC equals 10 + the spell’s level. On a success, the spell is copied, and you cast that spell at the lowest level it can be cast. You can only copy spells of a lesser or equal level to the spell slot used to cast Mirror Spell. You can choose new targets for the copied spell. The following rules apply:
You cannot copy your own spell.
You can only copy spells cast by creatures
For all intents and purposes, you are the original caster of the mirrored spell, and your spellcaster ability modifier is used if required. The same is true for saving throw DCs and attack modifiers.
At Higher Levels
Lore, some nice lore flavour and/or history