Zomesol, Wrathful Tyrant

Trample, Haste, Firststrike, Deathtouch.
Dragons you control have Trample, Haste, Firststrike, and Deathtouch.
As long as Zomesol, Wrathful Tyrant is in the command zone or on the battlefield, other Dragon spells you cast cost {1}{b}{r}{g} less to cast.
Devour X(As this creature enters the battlefield, you may sacrifice any number of creatures. If you do, put X +1/+1 counters on this creature for each creature that you sacrificed, where X is the number of creatures sacrificed this way.)