Gladiator Beast Bestiari (GLAS-EN020) - Gladiator's Assault Unlimited

When this card is Special Summoned by the effect of a "Gladiator Beast" monster, destroy 1 Spell or Trap Card. At the end of the Battle Phase, if this card attacked or was attacked, you can return it to the Deck to Special Summon 1 "Gladiator Beast" monster from your Deck, except "Gladiator Beast Beastari".