Curaja

Curaja (ケアルジャ, Kearuja), also known as Cure 4, is the most powerful of the Cure series of spells. It can restore most characters to full HP.

Final Fantasy
Curaja, also known as CUR4 in the Famicom release and Cure4 in the Origins release, is a level 7 White Magic spell which fully restores the HP of a single ally.

The spell can be bought at Gaia and can only be learnt by the White Wizard job class. In the Dawn of Souls and 20th Anniversary Edition releases it costs 35 MP to cast.

Chaos can also cast Curaja to fully heal himself during the final battle.

Final Fantasy III
Curaja or Cure4 is a level 7 White Magic spell and the most advanced healing spell. Only a White Mage, Devout, Sage, and Onion Knight can cast Curaja. It can be bought in the Invincible and in Doga's Village.

Final Fantasy IV
Curaja is the strongest White Magic healing spell that Rosa, Tellah, and Porom learn. Fusoya knows this spell from the outset. The spell fully heals the target, or heals 2,000-3,000 HP when used on the entire party, and costs 40 MP to cast.

Final Fantasy IV: The After Years
Curaja is the strongest White Magic healing spell in the game. Ceodore, Rosa, and Porom can learn Curaja. It costs 40 MP to cast.

Final Fantasy XII
Curaja (ケアルガ / Kearuga / Curaga in the Japanese version) is a White Magick 6 license that costs 45 LP to learn and 68 MP to use. It restores a large amount of HP to all allies and is a weaker version of Renew.

Final Fantasy Tactics
Curaja is the most powerful healing spell for White Mages. It cost 800 JP to learn. It has a speed of 10 and costs 20 MP to use. The spell heals a lot of HP and cannot be reflected. In the PS1 version, there is a chance that the user will say, upon casting, "Mighty breeze, heal from the sky! Cure4!".

Final Fantasy Crystal Chronicles: Ring of Fates
Curaja is casted by piling four Cure spells. It restores 999 HP.