[Update #2]: Magic: The Gathering is extending its Standard rotation from two to three years in order to help the floundering format on tabletop
[31] [57] Declare attackers : the player whose turn it is declares which creatures they control will attack
Anafenza, the Foremost Ancestor's Embrace Archive Haunt Benevolent Geist Bone Rattler (playtest) Brinebound Gift Catlike Curiosity Chapel Shieldgeist Clever Distraction Covetous Geist Dennick, Pious Apparition Departed Soulkeeper Dorothea's Retribution Drogskol Armaments Dryad Militant Festival of Embers Forbidden Crypt Generous Soul Ghastly Mimicry Ghostly Castigator Gutter Shortcut Hades, Sorcerer of Eld Hook-Haunt Drifter Katilda's Rising Dawn Lanterns' Lift Leyline of the Void Luminous Phantom Morning Apparition Necrodominance Planar Void Rest in Peace Sinner's Judgment Spectral Binding Twinblade Invocation Valgavoth, Terror Eater Waildrifter Yawgmoth's Agenda Yawgmoth's Day Planner (playtest)
In this case, the spell side provides an infinite-hand-size emblem while drawing you lots of cards, and the Sea Gate, Reborn side is an untapped mana source if needed early on
Cards like these highlight the contrast between the Pokemon and the background, making their appearance pop