エーテルターボ [ether turbo] in Japanese.
Final Fantasy VII

Use: restores all MP
Buy: - (sell: ? gil)
Steal: Poodler, Jersey, Magic Pot, Win Mover
Final Fantasy X
Buy: ? gil (sell: ? gil)
Obtain: (multiple ways), bribe Exoray, Funguar, Thorn
Equip effect: x30 for Magic Booster, Aeon effect: -
Description: Recovers 500 MP of one party member
Other: deals 500 MP damage to undead target
Type-0

Buy: 5,000 gil (sell: 500 gil)
Shop: Underling (after mission 5-2)
Treasure: missions 1-1, practice missions 5-A, 7-A
Obtain: buy for 400 SPP from the SP shop, Celestia chat (ch 2), Quon chat (ch 3), etc
Description: Restores all MP for one party member.
Airborne Brigade

Shop: 100 KP (x1), 100 KP (Exlusive Starter Set, x1), 100 KP (Event Exlusive 100-Coin Set, x1), 500 KP (Event Exlusive 500-Coin Set, x3), 1,000 KP (Turbo Ether 11-Set, x11)
Obtain: various login rewards
Description: Restores 3 BP (all)
Category: Item