One of the elements of the set was 81 cards that were "futureshifted," that is, they were cards from potential Magic futures
This pairs up really nicely with a ton of cards, from the card draw engine Fathom Mage, to creatures with the Devour keyword like Mycoloth and Bloodspore Thrinax
Absolving Lammasu Aerith Gainsborough Ajani's Pridemate Ancestor Dragon Angel of Vitality Archway Angel Aunt May Beza, the Bounding Spring Bishop's Soldier Bounding Felidar Cat Collector Charming Prince City Pigeon Compassionate Healer Crowd of True Believers Curious Farm Animals Dazzling Angel Essence Channeler Exemplar of Light Featherbrained Filcher Felidar Savior Flight-Deck Coordinator Guarded Heir Haliya, Guided by Light Healer's Hawk Herald of Faith Hero in Training Hinterland Sanctifier Holy Cow Inspiring Overseer Kutzil's Flanker Leonardo, Cutting Edge Leonin Vanguard Lifecreed Duo Linden, the Steadfast Queen Lita, Little Orphan Amphibian Lyra Dawnbringer Market Gnome Minwu, White Mage Momo, Playful Pet Rabaroo Troop Regal Caracal Rosa, Resolute White Mage Sarn of the Silken Throne Soaring Sandwing South Pole Voyager Spider-UK Stone Docent Sun-Blessed Healer Twinblade Paladin Twinmaw Stormbrood Vanguard Seraph Wanderbrine Preacher Wax-Wane Witness Werefox Bodyguard Zora, Spider Fancier
Plus, its one of still just a few cards to reliably copy permanent spells and for most colors it will probably remain their only way
Some of the obvious suspects were on the restricted list: the Power 9, sol ring and time vault (this was before its first errata)
