Elemental HERO Chaos Neos (SHVA-EN035) [Shadows in Valhalla]

"Elemental HERO Neos" + "Neo-Spacian Dark Panther" + "Neo-Spacian Glow Moss"
<br>Must first be Special Summoned (from your Extra Deck) by shuffling the above cards you control into the Deck. (You do not use "Polymerization.") During the End Phase: Shuffle this card into the Extra Deck, then 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 the turn, the effects of all face-up monsters your opponent controls are negated. • 1 Head: Return all monsters you control to the hand.