Advanced format ruling
Mushroom Man #2
Card effect (current official text)A player controlling this monster loses 300 Life Points during each of his/her Standby Phases when this card is face-up on the field. Control of this card is shifted to your opponent by paying 500 Life Points at your own End Phase.
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.