Adventures in the Forgotten Realms Set Boosters contain: At least 1 rare or mythic rare card (approximately 27% of Set Boosters contain 2 rares or mythic rares, 3% contain 3, and it's even possible to open 4 though that's less than 1% of the time.) 1 Traditional foil card of any rarity 1 Rulebook, module, or borderless common or uncommoncheck out the Collecting Adventures in the Forgotten Realms article for details
It does cost quite a bit of mana, but the effect is worth it for how powerful it is
52/130 Marowak
In the earlier years of the game, a 3/3 with Flying and Vigilance was an offensive and defensive powerhouse
However, Tajiri decided against it because he feared it would erase what he had built up since he was a teenager
Other noteworthy cards which have yet to find a home Thrasta, Tempests Roar Looks to be just rightly costed, as enabling this is hard even for Modern standards