Advanced format ruling
D.3.S. Frog
Card effect (current official text)"Des Frog" + "Des Frog" + "Des Frog"
A Fusion Summon of this card can only be conducted with the above Fusion Material Monsters. This card gains 500 ATK for each "Treeborn Frog" in 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.