The Dispute costs one more than Village Rites, you can sac a dork or artifact including tokens like Treasures or artifacts like Ichor Wellspring and you'll get a free Treasure for ramping and this really just leaves you down a mana
The emphasis here is on the ability to play additional lands, because many ramp cards like Cultivate or Rampant Growth allow you to put lands into play, but those dont count as your land for the turn
There are 33 rare and 7 mythic rare extended-art cards
Being able to see more cards than just the top deck each turn can help you find the pieces you need to pull off a winning combo or just get that final attacker into play that gives you just enough damage to win the game
Reading those sentences might make you think that RUG Delver might be better than BUG Delver right
Unsurprisingly, basically all of these are Bird-Typal decks helmed by Kastral, the Windcrested and Derevi, Empyrial Tactician