Dwarven Axe of the Sea

This Greataxe grants +1 to attack and damage rolls.
The Greatexe has 3 charges, and regains d3
each dawn.
Once per day the wielder may spend 1 charge to cast elemental weapon (bludgeoning) on the greataxe.
If the above elemental weapon spell is in effect, the wielder may spend 1 charge to end the effect and cast the wall of water spell.
If the greataxe uses all of its charges it has a 10% chance of destroying the gem inside and becoming a
+1 greataxe. (There is room for 2 more gems)