Maddened Wish

You may choose a creature card you own from
outside the game and put it onto the battlefield.
It gains haste until end of turn. At the beginning
of the next end step, sacrifice it and Maddened
Wish deals damage to you equal to that card's
converted mana cost.
Exile Maddened Wish.
When the voice of madness calls, existence is not a requirement to answer it.