Loki, Would-Be King

Vigilance
{u}, {t}: Create a 2/2 blue Illusion creature token
with "When this creature becomes the target of a spell, sacrifice it."
{4}{r}, {t}: Gain control of target creature an
opponent controls for as long as you control
Loki, Would-Be King.
{b}{b}: Target creature gets -1/-1 until end of turn.
"What have I to fear?"