As two actions, you freeze a creature that you can touch or see within 10 meters. The creature must make a Will saving throw.
On a failure, it is stunned until the end of its next turn.
You can target one additional creature for each additional mana expended. The creatures must be within 5 meters of each other when you target them.
You can expend 2 additional mana so the duration changes to 1 minute/mana, concentration and the creature is stunned for the duration. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.