Thrall, Warchief of the Horde

3 XP: {3}: Thrall gains triple strike and haste
until end of turn. Activate only as a sorcery.
7 XP: {3}, {t}: Cast lightning bolt.
10 XP: All spells have storm. Token copies are
non-legendary. (When a spell is cast, copy it for
each spell cast before it this turn. Players may choose
new targets for the copies.)
You brought the warchief, I'll bring the war.