Advanced format ruling
Rose Tentacles
Card effect (current official text)Cannot be Special Summoned. At the start of your Battle Phase, for each Plant-Type monster your opponent currently controls, this card gains 1 additional attack during each Battle Phase this turn. Each time this card destroys a Plant-Type monster by battle: Inflict 300 damage to your opponent.
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.