Advanced format ruling
Guardian Eatos
Card effect (current official text)If you have no monsters in your Graveyard, you can Special Summon this card (from your hand). You can send 1 of your Equip Spell Cards equipped to this card to the Graveyard, then target up to 3 monsters in your opponent's Graveyard; banish those targets, and if you do, this card gains 500 ATK for each monster banished by this effect, until the end of 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.