Goblin Mage

When Goblin Mage enters the battlefield, it explores.(When a creature explores, look at the top card of your deck. If you have a land, put it down on a battlefield. If not,
you may put it on a graveyard or on the top of your
deck and put a +1/+1 counter on this creature.)
He lead goblins to a forest, killed them, and betrayed the goblin society