Mafeal, Krage's Dream

+1: Target creature gets a -1/-1 counter until the end of this turn.
-7: Create a 1/6 creature token called 'Krage's Shadow' with the effect: 'At the begging of your upkeep, target creature gets -1/-1.
-10: If there is a planeswalker called 'Krage, Energy Dragon' in your hand or in your graveyard, put it onto the battlefield.