Create Explosion

The caster touches a small object or a creature (by a melee spell attack in the case of using the spell in combat) that's size category large or smaller and turns them into a living magic bomb, the target has no way to know that it has been cursed without magic means, this spell is considered a curse for effects or spells that lift or detect curses.

The caster can only have one target or item turned into a magic bomb at the same time. When you cast this spell you only need to touch the desired creature or item which is the somatic part of the spell the vocal part of the spell is only to issue the command word to activate the explosion which has a 100 ft limit in range if you issue the command word outside of the range the explosion does not activate but the target is still affected by the spell. If the caster didn't activate the explosion after 24 hours of touching the object or creature the spell ends and nothing happens. 

To activate it the caster must recite a line that he chose the day he learned the spell while being in range activating the explosion and dealing  5d10 fire damage to the target and only to the target nothing around him is affected and the only clue about the spell activating is the sound of the explosion and a flash of light, if the victim drops to 0 hp due to the damage of the spell his body disintegrates. In the case of casting the spell on an item if you activate the spell while the item is being held the one holding it receives the damage and the item is unaffected otherwise if the item is not being held it takes the damage of the spell. 

At higher levels increase the damage by 1d10 per level above a spell slot of level 3, if you cast the spell with a spell slot of 5th level or higher the spell no longer creates noise or light when it kills its target.