In Azteca to access him you have to have already done the quest to battle him. Since the game is static on levels different players may attain questing. Please consider moving those recipes to Oztomeca in three points. Some of the others I think should also be changed, but at least the can be accessed by porting to them. (Aegeus, Wozina, etc.) As new dungeons and any side worlds you may consider adding comes along the range of level a wizard you see in each world will also widen.