Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand or Graveyard) by sending 4 Level 1 monsters you control to the Graveyard, and cannot be Special Summoned by other ways. Other monsters you control cannot attack. During the Battle Step of either player's turn, while an attack involving this card is occurring: You can banish 1 Level 1 monster from your Graveyard once per battle; this face-up card is unaffected by other card effects, also it cannot be destroyed by battle. These changes last until the end of the Damage Step.