Malcasted Spellshot

enchant creature in a players hand.
when this Spell Aura enters a players hand, choose one:
• enchanted creatures mana cost is {1}{b} more. when enchanted creature enters the battlefield, its controller loses life equal to its mana cost. enchanted creature has -3/-2. {1}{b}: put a -1/-1 counter on enchanted creature.
• enchanted creatures mana cost is {1}{b} less. when enchanted creature enters the battlefield, its controller gains life equal to its mana cost. enchanted creature has +3/+2. {1