Planeswalker's Spear

Whenever equipped Planeswalker uses a
loyalty ability Planeswalker's Spear deals
damage to any target equal to the number of
loyalty counters added to or removed from
equipped Planeswalker.
Equip Planeswalker {1}: Attach this permanent to
target Planeswalker you control. Activate this ability
only any time you could cast a sorcery.)