Edison format ruling
Infernal Incinerator

Card effect (current official text)This card can only be Normal Summoned or Set by discarding all other card(s) in your hand and Tributing 1 card you control with 2000 or more ATK. This card gains 200 ATK for each monster your opponent controls. This card loses 500 ATK for each other monster you control.
Rulings
- Discarding your hand is a cost to Normal Summon or Set this card. It will not activate the effect of a card like "Goldd, Wu-Lord of Dark World".
- You must have at least 1 other card in your hand, besides "Infernal Incinerator", to discard when your Normal Summon or Set "Infernal Incinerator".
- This card can be Special Summoned (even from your Deck, with a card like "Monster Gate"). You do not have to discard your hand when you Special Summon this card.
- When you Normal Summon or Set "Infernal Incinerator", it does not start a chain even though you are using the monster’s effect to do so.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.