Ancient sledgehammer - new weapon!

The ancient sledgehammer is a very powerfull weapon, it can be found in the stronghold chests with a very small chance, it's attack is a big dmg dealing smash that deals splash damage and knockback to any creature in it's range(2 blocks around the player) and throws the player in the air by 1 block after the attack, it has a cooldown of 15 seconds.
I will make the concept arts and enchantment ideas later, for now i hope you like the idea!