Booh

Just decided to rejoin some Rohan for fun and already came up with a few questions.

1) I saw there is a Rare King Lion and a King Lion. The difference in description says, that the Rare one boosts the attack. But it doesn't boost any attack stats. So: is there no difference between those two?
2) It looks like there is an ULVL now Can it be accessed after I hit +50 or how does the system work exactly?