cards you can cast from graveyard mtg Magic The Gathering - Bloomburrow - Osteomancer Adept Building Around Leaving-the-Graveyard Effects in

No, not really

Baylen, the Haymaker is a fantastic option for this, offering tons of value with minimal required support

Gandalf the White, for example, is designed to mainly care about legends, but he can also break the famous artifact Isochron Scepter, as noted in this Reddit thread where users recognized the potential that Gandalf's ability adds to the Isochron Scepter

Fact or Fiction (T1, Ext, S, Block) R&D created the divvy mechanic in Invasion (taken from the card Raging River from Alpha) as a skill tester for players

Plus, it seems like newer card packs in the real world will come with codes to redeem in the digital arena