Arcane Bomb

You make a small bomb of pure arcane energy. You can throw the bomb up to 20 ft. as part of the spell to create it or for 1 Stamina on subsequent turns. Everyone within 10 ft. of the bomb when it goes off makes a Finesse Contest against your Will. If you succeed, they take 2d6 Arcane Damage or half that if you tie or fail. For each additional Stamina spent, increase the number of damage dice by 2d6. The bomb detonates a number of rounds later equal to your Will Score. You can choose to have the bomb detonate at any time as a free action.