Zinnober, Star-Stolen

Magecraft—Whenever you cast or copy an instant
or sorcery spell, gain control of target creature
with mana value less than that spell's mana value.
Suspend X+2—{x}{u}{b}. X can't be 0.
Whenever a time counter is removed from
Zinnober, Star-Stolen, return target instant or
sorcery card from your graveyard to your hand.
"I know what I must do."