Key to Glacier Keep?

'There… We'll need to combine our remaining keys to pass.'

Jack nodded, happy to go along with the idea. But Moranti asked, 'How come we can't claim all three barriers? If we go back, then we'll get all of those cores and can easily afford this one.'

'Each of these barriers is a separate enchantment.' Rynheart explained, 'When they deteriorate it's obvious that they always deteriorate following the same pattern. It's through understanding enchantments and inscriptions that I questioned the last room because both of the off-colored barriers shared similar yet opposing enchantments.'

Lunara blinked and questioned, 'Meaning?'