Grand Delta

Grand Delta, also known as GrandTrain, is a recurring ability in the Final Fantasy series. It is a Blue Magic spell.

Final Fantasy VI
Grand Delta was called GrandTrain in the original SNES release. It is a Lore ability learned by Strago Magus. The spell deals strong non-elemental magic damage to all enemies. It can only be learned from Hidon during the battle with him at Ebot's Rock, or in the Finest Fantasy for Advance port, from Omega Weapon.

Grand Delta's spell power is 84, or a little more than half the spell power of Ultima. All the same, it is Strago's strongest offensive Lore. It costs 64 MP to cast.

Final Fantasy Type-0
Grand Delta is one of Trey's abilities. It drains enemies' HP and inflicts Killsight. It can be unlocked starting from level 13 at the cost of 14 AP after unlocking Burst Delta.

Final Fantasy Trading Card Game
One of Strago's cards can use Grand Delta by Dulling Strago, discarding another Strago card and paying three Water CP. Grand Delta deals damage to all the opponent's Forwards equal to 12,000 divided by the number of opponent's Forwards, rounded down to the nearest interval of 1000.