Dimensional Anchor

{t}: Flip a coin. If it comes up heads, add {u}{r} to your mana pool. Otherwise, Dimensional Anchor deals 2 damage to you.
{1}{u}{r}, {t}: The next time a creature would enter the battlefield under an opponent's control this turn, flip a coin. If it comes up heads, that creature enters the battlefield under your control instead. Otherwise, discard a card at random.