Undercover Orc

At any time you may hide Undercover Orc
on a battlefield, library or graveyard (It can't
be the target of spells or abilities, as long as it
can't be seen.)
{1}{g}{g}: Reveal Undercover Orc from it's hiding
place and put it into your hand, tap target
creature, put a -1/-1 counter on each of up to two target creatures.