kinda new - What is the wish room in the Last Wish?

[round cosmos]

?

[sharp sun]

hidden room you can climb to before 1st encounter, there's a wall, you shoot in symbols then stand on plate
and it teleports you or activates effects or whatever

[round cosmos]

So it’s like a cheat room where you can access any part of the raid?

[tropic moth]

Essentially, yes