Prophecies and uniques

Hey all 👋🏼

I started playing this season for real for the first time. Never played into empowered echoes so was never really in endgame.

I pushed a multistrike void knight to 300 corruption and killer normal abberoth. This was in MG.

Now I started a bleed hammerdin in CoF SSF and now I am trying to get hang of prophecies.

The hammerdin wants a relic Valdyrs Chalice that drops in set or unique relic echoes in last ruin timeline.
When I go to the prophecies and take prophecies for unique relics in monoliths is this relic the loot table of the prophecy or not?
Do I need to finish this prophecy in last ruin or everywhere?

Thanks for your help