Tengu format ruling
Code A Ancient Ruins
Card effect (current official text)Each time a face-up "Alien" monster(s) is destroyed, place 1 A-Counter on this card. Once per turn, you can remove 2 A-Counters from anywhere on the field to Special Summon 1 "Alien" monster from your Graveyard.
Rulings
- If a Set "Alien" monster is destroyed by battle, you do not place A-Counters on this card. (It needs to be face-up at attack declaration).
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.