Aorgoh the Dominant Storm

Vigilance, trample, haste
Instant and sorcery spells you cast cost {1} less to cast.
Wherever you cast a spell, except for the
first spell you cast each turn, Aorgoh gets
+2/+2 until end of turn.
"It's roar can crack open the skies, bringing about
storms that were not there a moment ago. And in the
confusion and fear, it strikes."