They're both 5 mana, have the same effect, and are even both blue
It captures the nature of summons being powerful effects as they are in the game, but they can only exist temporarily
Rip, Spawn Hunter Taciturn and reclusive, Rip is a veteran monster hunter who prefers to work alone and is happiest when she's bashing a monster's head in
Every story needs a villain, and although this cards attack is particularly powerful, the Mewtwo character always is
Dance of the Skywise Dismiss into Dream Halcyon Glaze Inscription of Insight Jace, Cunning Castaway Labyrinth Guardian Living Lies of Loki Loki, the Deceiver Lord of the Unreal Manaform Hellkite Meloku the Clouded Mirror Mesmerizing Benthid Minn, Wily Illusionist Moonblade Shinobi Mordenkainen Murmuring Mystic Mysterio's Mirage Mysterio, Master of Illusion Phantasmal Image Phantom Steed Preston, the Vanisher Pulsating Illusion Skyclave Apparition Summoner's Bane The Watcher on the Road Veiled Apparition Veiled Sentry
Try taking a peek at Frankenstein's Monster from The Dark .) I still don't get the flavor, but mechanically the card is better, moving it up to a C