Tengu format ruling
Cyber Shadow Gardna
Card effect (current official text)During your opponent's Main Phase: Special Summon this card as an Effect Monster (Machine/EARTH/Level 4/ATK ?/DEF ?). (This card is also still a Trap.) When an opponent's monster declares an attack that targets this card: The ATK/DEF of this card become the ATK/DEF of the attacking monster. Once per turn, during your opponent's End Phase: Set this card in its Spell & Trap Zone.
Rulings
- A Field Spell Card or similar effect will adjust the ATK/DEF of "Cyber Shadow Gardna" accordingly after it copies the ATK & DEF of another monster.
- You cannot chain to the effect of "Cyber Shadow Gardna" that copies another monster’s ATK & DEF.
- "Light of Intervention" only stops you from Setting monsters. Since the final effect of "Cyber Shadow Gardna" Sets it as a Trap Card, this effect will still happen even if "Light of Intervention" is active.
- If you use "Limiter Removal" on your "Cyber Shadow Gardna", both effects (destroy it because of "Limiter Removal", and change it back into a Trap Card by its own effect) happen during the End Phase in the order of the controller’s preference.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.