B.E.S. Covered Core (UTR) [SOI-EN013] Ultimate Rare Secrets of Eternity You can only Special Summon

You can only Special Summon "Gimmick Puppet Nightmare" once per turn this way

this card's ATK becomes 3000 until the End Phase of this turn

When Oubliette leaves the battlefield

“Know your foes’ strengths as well as their weaknesses

B.E.S. Covered Core (UTR) [SOI-EN013] Ultimate Rare Secrets of Eternity You can only Special SummonSet: Shadow of Infinity Card type: Effect Monster Rarity: Ultimate Rare Attack: 2500 Defense: 800 Effect: Put 2 counters on this card when you Normal Summon it. This card is not destroyed as a result of battle. If this card battles a monster, toss a coin and call it at the end of the Damage Step. If you call it wrong, remove 1 counter. If this card battles without a counter, destroy this card at the end of the Damage Step.