I think you are talking about the new "Explore" mechanic. This was
present in my winning deck. The Pathfinding Axejaw is only 4 mana
value but as useful as the mox emerald. It often complements Skull
dinosaur that gets tapped if it attacks without other dinosaurs. The
6/6 Skull dinosaur leaves the enemy shaking in their boots detectable
by the long pause in their otherwise swift play.