Complex sentence: The 31 talent point is Leader of the Pack, an aura similar to the Moonkin aura, which grants party members within 45 yards an additional 3% chance to crit on melee and ranged damage.
Split into simpler sentences: The 31 talent point is Leader of the Pack, an aura similar to the Moonkin aura. This skill grants party members within 45 yards an additional 3% chance to make a critical hit on melee and ranged damage.