Clay Bomb

You touch a piece of clay at least 0.5lb, and you infuse it with magic to turn it into an explosive. This explosive will last up to an hour before exploding. It can explode early when you say the codeword you assign to them.

You can tie multiple bombs to the same word without risk of accidental explosion from speaking the word.

The bomb explodes in a 20ft radius from the point of origin. dealing 6d6 bludgeoning damage.

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.