Advanced format ruling
Ectoplasmer
Card effect (current official text)Once per turn, during each player's End Phase: The turn player must Tribute 1 face-up monster, and if they do, inflict damage to their opponent equal to half the original ATK of the Tributed monster.
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.