Final Fantasy XII is a new entry in the long-running franchise that exemplifies the best that the Japanese RPG genre has to offer.
To obtain the Shell Shield, complete the Clan Hunt "A Scream From The Sky" and take the reward, or receive it from a treasure in the Stilshrine of Miriam.
Staff of the Magi
This weapon can be stolen from rare game Luxollid.
Tournesol is the second most powerful weapon in the game. It has a 140 Atk with a maximum of 11 hits. It can be made using three Gemsteel, three Serpentarius, and three Empyreal Soul.
The Wyrmhero Blade is the second-most powerful greatsword, and the most difficult weapon to get. In order to obtain it, you must sell the Godslayer's Badge, Omega Badge, and Lu Shang's Badge. The sword can now be bought in the bazaar for 65535 gil. It has a 130 attack power with a Holy element and hits 2x or more every other hit for a maximum of nine hits. It is also the "Sword of Legend" from the Gilgamesh Hunt.
The Yagyu Darkblade
To have a better chance at obtain the Yagyu Darkblade, chain Bombshell. To do so you must defeat Bombshell once, then take the mine cart in the "Site 5" area of the Lhusu mines back to site 11. Then, go back to the area of Bombshell's appearance. Zone in and out of the area until Bombshell reappears. Keep repeating this process until Bombshell drops the Yagyu Darkblade.
The Zodiac Escutcheon is the most difficult shield to obtain. Equip the Diamond Armlet, then find the treasure in the "West Annex" area of Barheim Passage with traps leading up to it. Note: There is a 0.5% chance that it will appear in that treasure. Trying to obtain this shield may take a few hours. Its stats are 50 Evade, Added Effect: Immune to lightning.