I'm grinding MTG Arena pretty hard and managed to get my hands on 2-3 top tier decks by now (while still holding some wildcards).
Up to now i just played Ranked Games to get the daily challenges done. Once I have 5k Gold I play drafts. Traditional drafts seem pretty risky to me since you have to pay a lot of gems while getting a low base-value (3 boosters)
But I haven't figured out yet if it would be better to solely play Constructed events and then buy packs with the acquired gold.
What is the best approach to get the largest cardbase with no in-game purchases assuming a winrate of 50% across all event-types?