The Disney Lorcana TCG Azurite Sea set will include two starter decks, Disney Lorcana TCG: Azurite Sea Amber and Ruby Single-Player Deck and the Disney Lorcana TCG: Azurite Sea Emeral and Sapphire Single-Player Deck, Ink based cards, booster packs of additional cards, and a new Azurite Sea Illumineers Trove
The only time you actively want to play this rather than having to is when you have at least two other walls in your deck
In Commander, you can use the Instant to ramp, remove an artifact or as a Shock
There may be some better commanders in my opinion, but Greyfax is only a little bit behind them and that makes it a great choice to run in the main decks
replicate also allows you to effectively handle opposing countermagic because you can make a couple of copies if you suspect your opponent has a Dispel coming your way
Costing one mana makes it searchable with Urza's Saga in eternal formats and unlike Soul-Guide Lantern, you can exile the graveyard and draw a card at the same time, making it the most effective variant and very similar to Nihil Spellbomb