Time Bomb (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Components:||V, S, M (a small cogwheel)|
A bright streak flashes from your pointing finger to a point you choose within range in which you set a invisible time bomb which then blossoms with a low roar into an explosion of arcane when activated. In a location in which you set up to 150 ft away, you may place a small cogwheel which is normally unable to be seen by the naked eye (creatures may make a perception check of 17 to spot this) with a fuse of up to 10 minutes or with a activation of when someone passes by it's radius or on command, each creature in a 20-foot-radius sphere centred on that point must make a Dexterity saving throw. A target takes 6d6 force damage on a failed save, or half as much damage on a successful one.
The explosion spreads around corners. It sucks in loose objects in the area that aren't being worn or carried.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.