NO U

X equals all of your mana
Change the target of target spell or ability with a
single target.
All damage that was dealt by target player up to
this point during the game is reversed and instead
applied to the player that dealt the damage.
(Damage from any card used to deal damage to
you from target player is transferred directly to
target player). "You think you can win against me
with an Uno Card?" — Jordan McLeod,
last words