Quasi Seal first appeared in Tales of Eternia as one of Reid Hershel's many Divine Skills. It is activated as an extension to Omega Seal, which is the final arte that Reid learns after mastering both the "Slash" and "Thrust" attack styles. When Quasi Seal is activated, the slashing movement for the final part of Omega Seal summons several blades of wind that impale the enemy from all directions while it is trapped in the air. Because Quasi Seal can only be activated if the enemy is near death, it is guaranteed to kill the enemy as the finishing strike.