Between milling yourself, discarding a card, and sacrificing the saga, it pushes tons of cards into the graveyard to fuel your graveyard strategy, while the removal chapter gives you time to exploit those resources
Top 10 Rakdos Opponent Draw Triggers Orcish BowmastersOrcish Bowmasters Sheoldred, the ApocalypseSheoldred, the Apocalypse Underworld DreamsUnderworld Dreams Fate UnravelerFate Unraveler Ob Nixilis, the Hate-TwistedOb Nixilis, the Hate-Twisted Spiteful VisionsSpiteful Visions Zurzoth, Chaos RiderZurzoth, Chaos Rider Curse of Fool's WisdomCurse of Fool's Wisdom Dogged DetectiveDogged Detective
1 Liesa, Shroud Of Dusk One of the best Lifegain Commanders, it's useful both as the Commander as well as in the 99
Thats another plus
The nice thing about Go-Shintai is that it also lets you build it as a Shrine deck, another enchantment subtype, and they all work together with other Shrines for bonus effects
It also helps that, at full discount, Treasure Cruise is only (U) instead of (U)(U) that's required to cast Dig Through Time