Aquire from Ruby
Carbuncle has different effects depending on whether the short or long animation is in place, and what type of add on is in place.

Ruby Light:
Normal/Short Animation - Casts Reflect
Long Animation - Cast Reflect and Protect

Diamond Light:
Normal/Short Animation - Casts Vanish
Long Animation - Cast Vanish and Protect

Emerald Light:
Normal/Short Animation - Casts Haste
Long Animation - Cast Haste and Protect

Pearl Light:
Normal/Short Animation - Casts Shell
Long Animation - Cast Shell and Protect

Aquire from Sapphire
There are two summons that Eiko can use when casting Fenrir

Terrestial Rage:
Earth elemental damage to all non-flying enemies

Millennial Decay:
Maiden Prayer on. Causes wind-elemental damage to all enemies that is slightly stronger than Terrestial Rage.

Aquire from Phoenix Pinion
There are two summons that Eiko can use when casting Phoenix

Rebirth Flame:
Inflict small to moderate damage fire element like and KO'd allies are brought back.

Rebirth Flame:
Auto Version. Activated when all characters are KO'd. Consumes no MP but no damage is done to the enemy. The chance oc this happening is equal to the number of Phoenix Pinions in your inventory.

Aquire from Ribbon
Terra Homing:
Summons to inflict massive holy elemental damage to all enemies.

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