Krathar, Sword of Bone

Equipped Creature gets +X/+X, where X is the number of creatures in your graveyard.
When equipped creature deals combat damage to
a player, put a bone counter on Krathar, Sword of Bone
{3}: Create a X/X black skeleton creature token, where X is the number of bone counters on Krathar, Sword of Bone. Only activate this ability if a creature is equipped with Krathar, Sword of Bone
Equip {3}