Final Fantasy VII/Summon Materia

The Summon Materia is used to bring forth all sorts of terrifying creatures, which then proceed to damage all of the opponents at once. This basically amounts to a single or multiple magic attacks over a single, very very long animation...

All of the summon materia have 5 stars; each star allows the creature to be summoned in combat once. Thus one-star summon materia can be used once in combat and 5-star one (i.e., mastered one) five times. Master Summon materia can be used to summon all creatures without any limitations.

(To do: tables with other relevant properties)

Choco/Mog
Got from the Chocobo Farm. Talk to the chocobos, and choose the top dialogue option. Watch the chocobo to dance and you'll then receive it.  Equip Effects: Magic +04 MaxHP -10% MaxMP +05% MagicDef +04  Level 1: 0 AP Level 2: 2,000 AP Level 3: 14,000 AP Level 4: 25,000 AP Level 5: 35,000 AP

MP cost: 14

Deathblow!: Summons a chocobo carrying a moogle, which runs past and collides with the enemy. Dreadful. Wind-type damage. May cause Stop effect on enemies.

Fat Chocobo: (About 1:8 chance to get this) A fat chocobo falls from the skies and flattens the enemy. Fearsome. Deals non-elemental damage.

Shiva
Got from Junon after reviving Priscilla.

MP cost: 32

Diamond Dust: Shiva appears and blows ice crystals at the enemy. Ice-type damage.

Ifrit
Got after fighting Jenova-BIRTH in the Shin-Ra cargo ship.

MP cost: 34

Hellfire: Ifrit fierily craters the enemy dealing Fire-type damage.

Ramuh
In Gold Saucer, in the chocobo jockey room when trying to win the freedom from the desert prison.

MP cost: 40

Judgement bolt: Ramuh jolts enemies with thrilling thunder strike. Lightning-type damage.

Titan
In the abandoned Gongaga Reactor. After the Turks leave, inspect the hole they looked in.

MP cost: 46

Anger of the Land: Titan grabs the very ground the enemies stand on and topples it over, crushing them. Earth-type damage.

Leviathan
Solve Yuffie's pagoda sidequest and Godo gives it to you.

MP cost: 78

Tidal Wave: A great big wave drowns the enemies. Water-type damage.

Odin
In the Shin-Ra Mansion in Nibelheim. Open the safe upstairs using the clues found all over the place, and fight the boss Lost Number.

MP cost: 80

Steel Bladed Sword: Odin rides by and slashes all enemies in half, killing them instantly.

Gunge Lance: (If the enemy is immune to instant death attacks) Odin takes his lance Gungnir and throws it to the heavens, and it impales the enemy as it lands. Deals non-elemental damage.

Bahamut
In the Temple of the Ancients after defeating the red dragon.

MP cost: 100

Mega Flare: Bahamut fries the enemies. Deals non-elemental damage.

Kjata
Found floating around in the Sleeping Forest.

MP cost: 110

Tetra Disaster: An ugly monster causes a tiny, tiny earthquake and other nasty things. This causes Fire, Ice and Lightning damage.

Alexander
Found in the Great Glacier, in a cave somewhere on the east side of the big snowfield. Need to touch the hot springs elsewhere first, then come to the cave and fight the person guarding it.

MP cost: 120

Judgement: Alexander, colloquially put, lays some justice on the enemy's rear. Deals Holy damage.

Neo Bahamut
Found in the Whirlwind Maze.

MP cost: 140

Giga Flare: Bahamut hoisteth the enemies to air, then roasts them. Deals non-elemental damage.

Phoenix
Found on the top of Fort Condor after the final battle.

MP cost: 180

Phoenix Flame: Fries the enemies with phoenixfire (Fire-type damage). If any of the party members are down, they are recovered to full health (all status effects stay).

Hades
Found in the sunken Gelninka.

MP cost: 150

Black Cauldron: Causes damage as well as several status ailments on the enemy.

Typoon
Found high in the branches in the Ancient Forest near Cosmo Canyon.

MP cost: 160

Disintegration: Quite a typhoon. Causes Wind-type damage.

Bahamut ZERO
You need to have Bahamut and Neo Bahamut materias, as well as the Huge Blue Materia. Touch the Huge Blue Materia in Bugenhagen's laboratory to get Bahamut ZERO.

MP cost: 180

Tera Flare: I say, Bahamut fries the site from the orbit. It's the only way to be sure. Non-elemental damage as well.

Knights of the Round
Found on the Round Isle, in the northeastern corner of the world. It is not marked on the map. This island cannot be landed on, so you will need a Golden Chocobo to access it.

MP cost: 250

Ultimate End: The jolly lot of Camelot, the 13 knights of the round table, come forth from some mystical realm or other. Each knight, in turn, smashes each of the enemies for ludicruous amount of damage (9999 points, not accounting for armor and other protections). Each of these attacks has different damage type.

Master Summon
Can be obtained by getting each of the other Summon Materias to master level and touching the Huge Red Materia in Bugenhagen's laboratory. Alternatively, it can be obtained by defeating the Emerald Weapon and trading the Earth Harp on Kalm.