trading spellbook page

When this card enters the battlefield, if you control a spellbook, add {G}{G}{G} and draw a card. {G}{G}, {T}: Put a +1/+1 counter on up to 2 target creatures and a -1/-1 counter on another creature you control. {6}, {T}: Sacrifice a creature. then put a number of +1/+1 counters on target creature equal to the sacrificed creature’s power plus its toughness.{flavor}don’t worry, this won’t hurt a bit. it’ll hurt far more than that...