What are some budget-friendly options for building a Magic: The Gathering deck?

When building a Magic: The Gathering deck on a budget, consider using common and uncommon cards instead of rares or mythic rares. Look for budget-friendly deck archetypes like mono-colored or two-colored decks. Utilize cards from older sets or reprints to save money. Additionally, buying singles instead of booster packs can help you acquire specific cards you need at a lower cost.