Infernoid Onuncu [MP15-EN209] Secret Rare BW57 and an Xyz Monster

and an Xyz Monster

You can only activate this effect of "Return of the Monarchs" once per turn

Destroy this card during your 3rd End Phase after activation

If a "Stardust" Synchro Monster you control would Tribute itself to activate its effect

Infernoid Onuncu [MP15-EN209] Secret Rare BW57 and an Xyz MonsterSet: 2015 Mega Tins Mega Pack Card type: Effect Monster Rarity: Secret Rare Attack: 3000 Defense: 3000 Cannot be Normal Summoned Set. Must be Special Summoned (from your hand or Graveyard) by banishing 3 "Infernoid" monsters from your hand or Graveyard while the total Levels and Ranks of all Effect Monsters you control are 8 or lower, and cannot be Special Summoned by other ways. When this card is Special Summoned: You can destroy all other monsters