Tear is the Mastery Skill of Raven Laguz and Hawk Laguz in Fire Emblem: Radiant Dawn.
It causes your strength to triple and it halves the enemy speed for turn. The second effect, however, is not of importance since tripling strength often comes to a might of 100+, which no enemy can survive. It takes up 30 capacity.
It may be given to Raven Laguz and Hawk Laguz whom are level 30 or above and are given a Satori Sign. Naesala and Tibarn automatically start with this skill.
It activates on (Speed/2)% and is the most activated Skill in the game (other than those guaranteed activation, such as Canto) since Speed can go as high as 50 (for Naesala).