SCP 4666 The Yule Man

Whenever SCP 4666 enters the battlefield, if it
was cast, pay {s}. If you don't, put SCP 4666
into its owner's hand instead.
Whenever SCP 4666 would leave the battlefield,
you may put it into its owner's library third from
the top.
{b}{s}, {t}: Gain control of target creature with
power or toughness 1 or less. Its controller makes
a clue token.
SCP-4666 appears capable of instantaneous travel to
any location north of 40 N latitude.