Goat format ruling
Arsenal Summoner
Card effect (current official text)FLIP: Add 1 "Guardian" card from your Deck to your hand, except "Celtic Guardian", "Winged Dragon, Guardian of the Fortress #1", "Winged Dragon, Guardian of the Fortress #2", "Guardian of the Labyrinth", or "The Reliable Guardian".
Rulings
- You can add a card to your hand with Guardian in its name as long as it's not listed on Arsenal Summoner, such as Guardian of the Throne Room or Guardian Sphinx.
- You must show your opponent the card you retrieved with Arsenal Summoner.
- If you don't have any Guardian monsters you can retrieve when you activate Arsenal Summoner's effect, you must show your Deck to your opponent to prove it.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.