Naatrea, Dimir Mole

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)
{u/b}{u/b}: Naatrea, Dimir Mole gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)
"Everyone thinks they'll hear me coming. Everyone's wrong."