mtg competitive commander decks Which Streets of Strixhaven deck to choose? and essential lands The Best Magic: The Gathering

Remember one of the alternatives to MTGA is Magic Online where you do buy cards, but that comparison is its own discussion

Try to prioritize spells that put lands on the battlefield, and if your ramp spells are mostly permanents, look for ones that dont charge you extra mana to find lands after you cast them

Celestine does require you to gain life before you can start bringing creatures back, with so many ways to efficiently gain life in Commander this isnt a problem at all

Treasure Vault might also be a fun addition to this deck if players are having trouble getting the lands they need, but it shouldn't be too much of an issue with the flip lands in this list