Advanced format ruling
Trident Dragion
Card effect (current official text)1 Dragon-Type Tuner + 1 or more non-Tuner Dragon-Type monsters
Must be Synchro Summoned, and cannot be Special Summoned by other ways. When this card is Synchro Summoned: You can target up to 2 other cards you control; destroy those targets, and if you do, for each destroyed card, this card gains 1 additional attack during each Battle Phase this turn.
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.