Edison format ruling
Armed Dragon LV3

Card effect (current official text)During your Standby Phase: You can send this card to the GY; Special Summon 1 "Armed Dragon LV5" from your hand or Deck.
Rulings
(1) During your Standby Phase, by sending this face-up card to the GY, Special Summon 1 Armed Dragon LV5 from your hand or Deck.
- The (1) Trigger Effect is optional, it activates & resolves on the field.
- Sending this face-up card to the GY is a cost. This effect can't activate while Macro Cosmos is active, since you can't pay the cost.
- This effect can't activate if you don't have Armed Dragon LV5 in your hand / Deck.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.