Corytha, Child of the Deep

{3}{b/r}: Corytha gains Deathtouch until end of
turn.
Corytha must attack each combat if able.
When Corytha attacks, target creature an
opponent controls gets -1/-1 and must block
this combat if able.
{b/r}{u/r}{t}: Flip a coin, if you win the flip,
Corytha deals 1 damage to any target, otherwise
untap her. Activate only as a sorcery.