Tengu format ruling
Tornado Wall
Card effect (current official text)Activate only while "Umi" is on the field. While "Umi" is face-up on the field, you take no Battle Damage from attacking monsters. Destroy this card when "Umi" leaves the field.
Rulings
- Tornado Wall may be Set on the field if Umi is not on the field, but it cannot be activated. If targeted by Bait Doll when face-down and Umi is not on the field, it is destroyed.
- Tornado Wall may be activated when Maiden of the Aqua or A Legendary Ocean is face-up on the field.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.