Gek

{b}{b} reduce toughness by 1 for one turn. If you reduce in this way add 2/2 for one turn next
turn

{b}{b}{1} reduce toughness by the amount of creatures under your control. Add 1/1 to every creature in play for one turn.(if you would destroy the card by doing so, stop at 4 and leave this card on 3/1)