C4

You throw a stone slab and you'll see for turning the slab into a stone C4

You see 4 Stone like sticks sticking out of a circular stone slab that seems to be glowing with radiant energy if anyone is to enter a vicinity of 10 feet the stone sticks Will start to glow and disperse an attack on each Stone stick the attack is 1d6 lightning damage 1d6 radiant damage The stone sticks seems to be pointing up two Towards the Sky in two out to the side.