In order for this to work, there has to be a second spell on the stack that is targetable say Lightning Bolt
The design team got two pieces of feedback
Card Name Mana Cost Type Creature Shapeshifter Rarity Uncommon rules Text Changeling (This card is every creature type.) Champion a creature (When this enters, sacrifice it unless you exile another creature you control
Between the poppy neon colour palette and the intimidating collage of Fighting Pokmon, this wonderfully illustrated card by DOM perfectly encapsulates Eri as a character
YuGiOh went with the card game, PkMn went with the video game
Dans List Creatures (32) 1 Wirewood Savage 1 Mongrel Pack 1 Avian Changeling 1 Changeling Berserker 1 Changeling Hero 1 Changeling Titan 1 Fire-Belly Changeling 1 Mirror Entity 1 Woodland Changeling 1 Taurean Mauler 1 Kozilek, Butcher of Truth 1 Manaweft Sliver 1 Enlightened Ascetic 1 Felidar Cub 1 Ulamog, the Ceaseless Hunger 1 Pride Sovereign 1 Feral Prowler 1 Alms Collector 1 Beast Whisperer 1 Resolute Watchdog 1 Impostor of the Sixth Pride 1 Valiant Changeling 1 Universal Automaton 1 Irregular Cohort 1 Selfless Savior 1 Terror of the Peaks 1 Realmwalker 1 Masked Vandal 1 Guardian Gladewalker 1 Bloodline Pretender 1 Esper Sentinel 1 Loyal Warhound Lands (36) Spells (31) 1 Sylvan Library 1 Sol Ring 1 Mirari's Wake 1 Skullclamp 1 Cryptic Gateway 1 Nature's Lore 1 Three Visits 1 Blades of Velis Vel 1 Crib Swap 1 Shields of Velis Vel 1 Shared Animosity 1 Eldrazi Conscription 1 Cultivate 1 Parallel Lives 1 Rootborn Defenses 1 Druid's Deliverance 1 Boros Charm 1 Shamanic Revelation 1 Impact Tremors 1 Cryptolith Rite 1 Anointed Procession 1 Harvest Season 1 Kindred Charge 1 Kindred Summons 1 Camaraderie 1 Arcane Signet 1 Release the Dogs 1 Akroma's Will 1 Esika's Chariot 1 Cosmic Intervention 1 Rite of Harmony My Take Dan definitely searched through quite a few cards in order to find enough Shapeshifters
