Time Bomb

Celestial (chronomancy) 4th level

Casting Time: 1 action
Range: 120 feet
Components: V, S, M (a stopwatch or an hourglass)
Duration: Instantaneous

You throw a bomb at a point within range, which remains fixed in place. Each creature in a 5-foot radius sphere centered on that point at the time of casting, or that later enters that area, must make a Dexterity saving throw. On a failure, the bomb sticks to the first creature that fails the save, following its entire movement. At the start of your next turn, the bomb explodes. Each creature in a 20-foot radius sphere centered on the bomb must make a Constitution saving throw. It takes 7d6 chronal damage on a failed save, or half as much damage on a successful one. The bomb detonates early if the creature with the bomb drops to 0 hit points or if another bomb sticks to the same target.

When throwing the bomb at a creature that already has a bomb attached, if it fails the Dexterity saving throw again, each creature in a 20-foot radius sphere centered on the bomb must make a Constitution saving throw. On a failed save, the creature is Stunned for 1 minute. At the start of each of its turns, the creature makes a Constitution saving throw. On a success, the Stun effect ends.

At Higher Levels. When you cast this spell by spending Mana points equivalent to a spell of 5th level or higher, the damage increases by 1d6 for each spell level above 4th.