It runs a few board wipes including Nevinyrral's Disk, but it doesnt seem to have an endgame besides to tick up Teferi and cast a big creature like Deep-Sea Kraken, Sphinx of Magosi, or the previously mentioned Lorthos, the Tidemaker
If you're looking to build around legendary creatures, be sure to consider other powerful options like Primevals' Glorious RebirthPrimevals' Glorious Rebirth, Shanid, Sleepers' ScourgeShanid, Sleepers' Scourge, Urza's Ruinous BlastUrza's Ruinous Blast, and Ratadrabik of UrborgRatadrabik of Urborg
Heal What Has Been Hurt Healing can be great if used at the right time
Appropriately enough, I also have 1 blue amulet and no others
Demon of Fate's Design is an excellent fit for Commander decks that revolve around enchantments, curses, rooms, and the like