Tengu format ruling
Elemental HERO Storm Neos
Card effect (current official text)"Elemental HERO Neos" + "Neo-Spacian Air Hummingbird" + "Neo-Spacian Aqua Dolphin"
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: You can destroy all Spell and Trap Cards on the field. During the End Phase: Shuffle this card into the Extra Deck. When this card is shuffled into the Extra Deck this way: Shuffle all cards on the field into the Deck.
Rulings
- Elemental Hero Storm Neos' effect that destroys Spell and Trap Cards is an Ignition Effect.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.