Wrothvar, Volcano's Wrath

: At any time on your turn, you may exile this card for two turns. If you do, create a 5/5 red Dragon creature token with flying.
+1: You may search your library for a Mountain, reveal it, and put it onto the battlefield tapped.
-20: As an additional cost to this ability, sacrifice all Mountains you control. Deal 20 damage to target player.