Chaos Elemental Note 14

A note from the Chaos Elemental can be found on the Chaos Elemental's Top Trumps card.

Meaning
It is a simple Substitution cipher, with each letter representing another letter. It decodes to:

There will come a time when the Empty One returns, aiming to take the Stone and confirming himself as an Elder God.

Solution
When Zaros returns in Fate of the GOds, he will attempt to take the Stone of Jas and become an Elder God.