Some might argue that Urzas Saga should be on the list, and while it can be a nice way to grab Colossus Hammer, Sol Ring or the aforementioned Masterwork of Ingenuity, its also a lot pricier than The Mycosynth Gardens
Eowyn creates two 2/2 Human Knight tokens with both trample and haste if you had a Human come into play before your combat step each turn, continuously refilling your board with a growing army
Sanguine Bond is the traditional card that goes infinite with Exquisite Blood, creating a feedback loop between the two abilities
Lastly, the "One Shall Stand, One Shall Fall" drop consists of "full-art" versions of the five basic land cards, each depicting a different locale on Cybertron
The biggest difference is that hexproof allows the permanent with the ability to be the target of spells by its controller, allowing that player to buff their creature with auras and equipment while shroud doesnt
If a card is worth putting in your 99, its probably worth casting it more than once right
