"Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by sending 1 non-Effect Monster from your hand or face-up from your field to the GY. Gains ATK equal to that sent monster's Level x 200. You can Tribute 1 Effect Monster; Special Summon 1 Normal Monster from your hand or Deck. You can only use this effect of "Cosmo Brain" once per turn."