Metaphys Executor

Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by banishing 5 "Metaphys" cards with different names from your GY and/or face-up from your field. This face-up card on the field cannot be destroyed, or banished, by card effects. Once per turn, if your opponent controls more cards than you do: You can target 1 of your banished "Metaphys" monsters; Special Summon it, but banish it during the End Phase of the next turn.