You'll never miss a land drop again, and this also really helps to filter your deck, ensuring you're less likely to whiff on a later draw
That means cutting cards that dont cleanly fit into either role, or which are redundant versions of effects we have already graveyard decks can easily access huge chunks of their library each game, so variety is more valuable than depth
Ravnica Allegiance was released early on Magic Online, allowing players to try out new cards in their decks
Or, if nothing else, a list of the most promising ones
Though having said that, some of the cards I thought looked awful online, like Rhystic Study, actually looked way better in person