||Shadows in Valhalla
"Elemental HERO Neos" + "Neo-Spacian Dark Panther" + "Neo-Spacian Glow Moss"
Must first be Special Summoned (from your Extra Deck) by shuffling the above cards you control into the Deck. (You do not use "Polymerization"). Once per turn, during the End Phase: Shuffle this card into the Extra Deck, and if you do, Set all face-up monsters on the field. Once per turn, during your Main Phase 1: You can toss a coin 3 times.
●3 Heads: Destroy all monsters your opponent controls.
●2 Heads: For the rest of this turn, the effects of all face-up monsters your opponent controls are negated.
●1 Head: Return all monsters you control to the hand.