Cards like Hidetsugu and Kairi or Keiga, the Tide Star work very well when immediately sacrificed
Lands don't cost any mana, but you can usually only play one a turn, and like other MTG card types, you can only play them at Sorcery speed
The box states "noncreature spells" and "protection fields," which very much reads like a control deck that could even feature some alternative win conditions other than hitting opponents down to zero life
From here youll have enough Radiant Solar triggers to work with to loop through this process as many times as your life total can handle, since Tomb of Annihilation costs three life per trip
There's a small Astral Slide package to get a bit more value out of the powerful enchantment
When Ivora enters and whenever it deals combat damage to a player, create a Blood token