The Old Gods knows it instantly, same with The Seven and The Drowned God in Westeros.
In Essos, The lord of light and many other gods residing there knows it's arrival.
Even Death (The many faced God) and The Great Other are aware of it.
They all shares the same feeling towards it (with the exception of The Great Other). Unease.
This one is powerful. There's no doubt about it.
While everyone of them get their power from their believers or sacrifices in their name, this one is completely independent. It uses it's own power.
They knew it can interfere to their own plans. While the Old Gods just want to defeat the Great Others, the others fight for dominance.
They know that it will change everything.
X can't help the smile that creeps on his face and the chuckles that follows it. His eyes shining with anticipation and glee.
This will be his biggest and best game he came upon. And add it with a valuable ingredient, it will be chaos.
Moving the gigantic chess pieces to their beginning position led him to emit a evil laugh. He let the laugh to leave the place making every deity heard it.
It is disturbing for them.
And it would be a surprise to them one day that it came from a kid.
Indeed their thoughts proved prophetic.
Because it is Dice; the cube that changes everything, that they are all against at.
