Eyes Like the Sun

Flying, first strike, trample, haste
Hypersonic(You may put this card from your hand
onto the battlefield during your declare attackers step.
If you do, you lose the game at the beginning of your
next upkeep unless you pay this card's mana cost.)
Whenever Eyes Like the Sun deals damage to a
player, as long as it entered the battlefield this
turn, it deals half that much damage rounded up
to that player instead.
Eyes Like the Sun can only attack alone.