Flash (You may cast this spell any time you could cast an instant.) When Hidden Blade enters the battlefield, attach it to target creature you control. If that creature is an Assassin, it gains deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) until end of turn. Equipped creature gets +1/+0 and has first strike (This creature deals combat damage before creatures without first strike.). 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.)