Advanced format ruling
Spacegate
Card effect (current official text)Each time a monster your opponent controls attacks or is attacked, place 1 Gate Counter on this card at the end of the Damage Step. During your Main Phase: You can send this card to the Graveyard; Special Summon 1 monster from your hand whose Level is less than or equal to the number of Gate Counters on this card.
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.