Koh, the Face Stealer

Fear
{3}{u}: Koh becomes a copy of target permanent
until end of turn with this ability in addition to
its other abilities. If Koh would transform into a permanent, create a token of that permanent that
is non-legendary instead. If Koh becomes a copy
of a legendary permanent, Koh becomes non- legendary. When Koh becomes the copy of a permanent, if that permanent has a triggered
ability, trigger it. This ability costs {1} less for
each time it has been activated this turn.