If the target creature is an illegal target as Sephiroth's Intervention tries to resolve, it won't resolve and none of its effects will happen
Vanille, Cheerful lCie / Ragnarok, Divine Deliverance Rating: 7/10 Before we consider the meld ability, Vanille, Cheerful l'Cie is basically just Acolyte of Affliction, which is a great card in its own right, so this makes the cut in basically every green deck
Garland, Knight of Cornelia / Chaos, the Endless Rating: 6/10 Garland, Knight of Cornelia isnt broken by any means, but in a spells deck there are few better turn 2 plays
The ability won't affect those spells and it won't affect spells that those players cast before you activated it
Those creatures gain flying until end of turn
She stands out as one of Amber's most busted card-draw engines due to how efficiently she swings the game's economy