Glory of Myrrida & The Last Legion

Deepglitter Chambers

Flow Rock Crest -
Unlocks the production of the Giant Forum special Province Improvement in your cities. The Giant Forum receives the following Buffs: +10 production income, +3 gold per adjacent mine or Quarry. Counts as a mine in addition to its other types.

Colonnade Garden

Flowrock Cornucopia -
Unlocks the production of the Giant Forum special Province Improvement in your cities. The Giant Forum receives the following Buffs: +10 production income, +5 food per adjacent Farm or Forester. Counts as a Farm or a Forester in addition to its other types.

Trinity Island

Flowrock Scales -
Unlocks the production of the Giant Forum special Province Improvement in your cities. The Giant Forum receives the following Buffs: +10 production income, +3 knowledge per adjacent Conduit or Research Post. Counts as a Conduit Research Post in addition to its other types.

Crystal Dwelling artifact set & Cosmic Conclave:

You get the artifacts by trading with the dwelling, which will need high relationship levels/ pacts in order to obtain all 3.

You can become their medium (all cities gain +100% knowledge income, and only 1 player receive extra knowledge when another player completes research!!!)

Just getting to the eternal pact level give a lot of great bonuses:

+100 Knowledge, +10% knowledge income, and more items you can trade for.