Jace, Draconic Telemancer

: Sacrifice a non-dragon creature you control. If you do, prevent all combat damage that would be dealt to Jace, Draconic Telemancer this turn.
+1: Jace, Draconic Telemancer deals 2 damage to target non-dragon creature unless that creatures controller discards a card. Scry 1.
-7: Search your library for a dragon creature card. Put it on to the battlefield, then shuffle your library. Dragons you control have double strike.