Excalibur

{9}: Excalibur becomes a Enchantment
Creature that Reads: 'Attach Excalibur to
Legendary Creatures only. Target Creature
Gains +9/+9, is Indestructible and has:
Sacrifice This Creature: Detach Attachment.'
"I was not born to live a man's life,
but to be the stuff of future memory."