Tengu format ruling
Cloudian - Turbulence
Card effect (current official text)This card cannot be destroyed by battle. If this card is in face-up Defense Position, destroy it. When you Normal Summon this card, place 1 Fog Counter on it for each "Cloudian" monster on the field. You can remove 1 Fog Counter from this card to Special Summon 1 "Cloudian - Smoke Ball" from your Deck or from either player's Graveyard.
Rulings
- If "Cloudian – Turbulence" is attacked while in face-down Defense Position and it is flipped face-up by the attack, it is destroyed by its effect after damage calculation.
- You cannot activate the effect of "Cloudian – Turbulence" that Special Summons "Cloudian – Smoke Ball" if "Cloudian – Smoke Ball" is not in your Deck or in either player’s GY.
- If you activate "Cloudian – Turbulence’s" effect and an effect is chained that removes all 3 copies of "Cloudian – Smoke Ball" from play, you do not have to show your Deck to your opponent to verify because all 3 copies of "Cloudian – Smoke Ball" are accounted for.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.