Possessed pickaxe (Abandoned Mine)

How does it move of its own accord?

Combat level

49

Magic

1

Ranged

1

Slayer level

1

Life points

1,750

Melee max hit

140

Magic max hit

0

Ranged max hit

0

Melee accuracy

536

Magic accuracy

0

Ranged accuracy

0

Armour

536

Weakness

water

Attack style

melee

Combat experience

87.5

Slayer category

phantoms, undead

Poisonous

No

Aggressive

No