A-Ancestral Katana

Whenever a Samurai or Warrior you control attacks alone, you may pay 1 generic mana . When you do, attach Ancestral Katana to it. Equipped creature gets +2/+2 and has "This creature has first strike as long as it's attacking." Equip 2 generic mana ( 2 generic mana : Attach to target creature you control. Equip only as a sorcery.)