The Ice King

Whenever The Ice King deals combat damage to
a creature, tap it, it doesn't untap during its
controller's next untap phase.
{2}{u}{u}: Gain control of target creature until
end of turn, it gains haste and is a princess as
long as you control it. If the owner of the
creature consent to, they get married, you
keep control of the creature after your end step
and you can no longer activate this ability.