Balefire Liege, Blinking Spirit, Tradewind Rider, Spirit of the Night, Spirit of the Hearth, Azorius Herald, Bloodghast, Nether Shadow, Nether Spirit, Nether Traitor, Krovikan Horror, Celestial Crusader, all of the Spirit avatars like Demigod of Revenge, Primordial Sage, Dimir Infiltrator, the muse cycle like Windborn Muse and Seedborn Muse, Eternal Dragon, Ghost Council of Orzhova, Guardian of the Guildpact, Swans of Bryn Argoll, Wall of Reverence, Karmic Guide, Midnight Banshee, the Phantom creatures like Phantom Centaur and Phantom Nishoba, the Rusalkas, the Eidolons, both Spirit Guides, Sovereigns of Lost Alara, Spectral Lynx, and, of course, Will-o'-the-Wisp
You generally want to play it as a 1/1 creature on turn one
Phantom Beast Phantom Monster Phantom Ninja Phantom Steed Phantom Warrior Phantom Whelp Phobian Phantasm Pol Jamaar, Illusionist Psionic Entity Pulsating Illusion Riftwing Cloudskate Shaper Parasite Sneaky Homunculus Somnophore Spark Double Spire Phantasm Tempestra, Dame of Games Teyo's Lightshield Thalakos Mistfolk Titan of Littjara Toothy, Imaginary Friend Unblinking Bleb Veiling Oddity Vertigo Spawn Virtual Assistant Walking Dream Wandering Eye Zephid ther Figment
But just like when there's smoke, there's fire, when there are official reveals in MTG, there are unofficial leaks
Unfortunately for fans looking to own a copy of The Tabernacle at Pendrell Vale, this promotion is unlikely to ever happen again