Yes, it should be sold at a materia shop down the road, as well as you can get master command. I also believe yuffie comes equipped with it.
You can steal two kinds of Genji Gear from Gilgamesh during both encounters.
You cannot buy Stream Capes. You can find one in the Liberte whirlpool caves, and you can steal them from the Ice Dragon boss. If you are past both of those points, then I am afraid you have missed that item.
Humbabas in the Mosphoran Highwaste drop them, or you can steal them from the mark Catoblepas.
Usually only once but sometimes the enemy has more than one item, it should say "Nothing to steal" once the enemy has no more items left.
You use the item 'Dark Matter', which you must steal from Zeromus on a previous playthrough.
Yes, FFG Is A Scam. They Steal Your Money And Don't Give You What You Paid For.
The Gnoma Halcyon is a rare steal and a rare drop from the Gnoma Entite, which appears in the Westersand during a sandstorm. Be careful as it is very powerful. Equip Thief's Cuffs to increase the chances of stealing the Halcyon.
Steal them from 'Blitz' enemies, or win them from defeated 'Forbidden' enemies (or refine them from Forbidden's card). Blitz can be found in Centra's Lenown Plains and Serengetti Plains. Forbidden are found at the Tomb of the Unknown King.
If you are getting Verlander then yes, that is a steal! Verlander is the top pitcher in fantasy baseball and Ethier isn't even a top 30 outfielder.
It's a black robe. You can pick it up on a chocobo at the dive spot south of the Forgotten Continent, steal it from Lich, or you can synth it in Daguerreo on disc four from a Gaia Gear and an N-Kai Armlet for 8000 gil.
Make sure you use Agriase's Northswain and Judgement blade quite often. Also use a black mage's black magic attack directly after she hits Gaffgarion because he can be quite irritating sometimes after using shadowblade to steal hp from the enemy.
Have you done everything you need to? Like did Cait Sith steal the Keystone from you yet? If you have then you game has probably glitched. But if it's recurring, your Disk may be scratched or be malfunctioning in some way. Hope this helps.