Banshee's Blade | Magic: The Gathering
Formats Banshee's Blade is Legal in
Official Oracle Text for Banshee's Blade
Whenever equipped creature deals combat damage, put a charge counter on Banshee's Blade.
Equip (: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)