shosh, the living mount

+2: create a 2/2 golmite artifact token with "when this creature leaves the battlefield add 2 loyalty counters on shosh
-1: draw a card, if that card was a creature add loyalty counters on shosh equal to half that creature mana cost
-15: destroy 25 target permenants, shosh deals damage equal to twice that many destroyed permenates divided between any tagets.