Hypergenesis was a strong deck in Extended at the time of Moderns release, so Wizards was understandably cautious about putting Hypergenesis into a format with an ever-growing card pool
Primarily a sideboard option, it has been picked up by a wide range of decks, including Amulet Titan, Eldrazi Ramp, Jeskai Dress Down, Grixis Wizards
Legendary Enchantment Forge Anew When this enchantment enters, return target Equipment card from your graveyard to the battlefield
Its higher mana cost also covers one of the big weaknesses of aggressive goblin decks: they often run out of steam in long multiplayer games, giving your opponents opportunities to punish you for taking the lead early in the game
It was forged in another world
For example, Doric, Natures Warden is the one dual-faced card in the promotional set and can transform into Doric, Owlbear Avenger when a player attacks with her and pays a small Mana cost