Marthammor Duin

+1: Put a +1/+1 counter on each dwarf you control. Then get x energy counters where x equals the highest power among creatures you control.
-2: Search your library or graveyard for an enchantment or artifact and put it onto the battlefield under your control.
-7: You get an emblem with "Spells or abilities that cost any amount of energy cost 0 instead"