So I'm working on a Brimstone Aasimar (tiefling-aasimar hybrid) as requested by a player of mine. For their "Legacy of the Heavens and Hells" I'm wanting them to have to choose every day to cast either Lesser Restoration, or Hellish Rebuke at the 2nd-level, as well as choosing between casting Darkness or Daylight.

I do not want them to be able to cast both every day, only one, but I don't want them to have to make the choice once at character creation and stick with that choice forever.

After searching around, as well as messing around in the homebrew builder, I'm unsure if this is even possible, as I don't think any race in the game currently has this function, but if it is possible, insight and instructions would be greatly appreciated!

The way it works on the sheet is you give them a feature with the 2 spells each individually attached but nothing to indicate how many times it can be cast, so on the sheet it will show as “at will.” Then you also add an action to the same feature that has limited uses attached to it.

For the player, whenever they tap the spell the sidebar will pop out and the name of the class feature will be above the spell name. When they tap the feature name the sidebar will change from the spell to the feature description display. The limited uses for the action will be there available for them to tick off there.