Casts Regen when HP is low.Final Fantasy X description
SOS Regen (ピンチにリジェネ, Pinchi ni Rijene?, lit. Regen in a Pinch), also known as Critical Regen, is a recurring ability in the series. It grants the Regen status once the player's HP has hit critical and can never be dispelled. However, it will often wear off once the character has left Critical status and/or the status is dispelled after leaving Critical status.
SOS Regen is an ability that can be customized onto any armor by using 12x Healing Spring. When added, it adds 20,000 gil to the armor's value.
SOS Regen is a passive ability that bestows Regen while HP is low. It can be used by Bombino, Lann (Cecil's Champion Jewel), Phoenix.