Caliburn, Sword In The Stone

Equipped creature gets +3/+3 and has vigilance and first strike.
{6} All your other Knights get +1/+1, vigilance and first strike until end of turn.
Equip {5}
"And he pulled the legendary sword out from its prison, and it shone with the brilliance of hope. He knew at that moment his destiny and what would happen while he wielded this blade. His story had just begun."