King Crow, Heroes Guide

Vigilance, Haste
Power and Toughness are equal to X +1
When "King Crow, Heroes Guide" enters the battlefield, All knights get First strike, Lifelink,
Haste, Vigilance and Menace for X turns.
{t}, Pay 5 life; Sacrifice
"King Crow, Heroes Guide", Then all knights
get X +1/+1 Until your next turn.