Advanced 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.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.