Kord, the Stormlord

Kord costs {x} less to cast, where X is the total
amount of life each opponent lost this turn.
Whenever a creature you control attacks, you
may pay 2 life. If you do, that creature gains
+1/+0 and first strike until end of turn.
Whenever an opponent loses life for the first
time each turn, create a 1/1 white Soldier
creature token with lifelink. Creatures you
control gain haste until end of turn.