Hildibrand's adventure fits the requirement, and being an instant means it gets you closer to triggering Y'shtola on other players' turns (Y'shtola triggers on everyone's end step)
Mana rocks like this are uncommon, being so aggressively costed for so generous an effect, and Sol Ring has long since established itself as a Commander format must-have
Instead, it seems like the Magic fanbase has just collectively woken up to this card's potential, and collectors are out buying it up in droves
In Set Boosters, you had the potential to get up to 6 commons, but that came at the cost of not getting additional uncommons, rares, and mythic rares
Green has plenty of cards that draw you a ton of cards and this feels clunkier than they are
You can also get copies of Damn, Bloodline Necromancer, Cordial Vampire, Elenda, the Dusk Rose and plenty of other decent rares