Scion of Emrakul

Devoid (This card has no color.)
When Scion of Emrakul enters the battlefield,
you may gain control of target creature with
power or toughness 3 or less until Scion of
Emrakul leaves the battlefield.
{c}{c}, sacrifice another colorless nonland
permanent: Counter target noncreature spell.
({c} represents colorless mana.)