Pauper is the obvious answer. It's unique in that every card in the format is Common rarity, so that mitigates price already. Check out MTGGoldfish's Metagame page for Pauper, which lists competitively viable decks and their price. Not sure how up to date it is, but it's a good starting point!
Pauper is the obvious answer. It's unique in that every card in the format is Common rarity, so that mitigates price already. Check out MTGGoldfish's Metagame page for Pauper, which lists competitively viable decks and their price. Not sure how up to date it is, but it's a good starting point!