Blaze Cannon [LED7-EN005] Ultra Rare

Set:	Legendary Duelists: Rage of Ra
Card type:	Quick Play Spell
Rarity:	Ultra Rare

(This card is also always treated as a "Blaze Accelerator" card.)One "The Winged Dragon of Ra" you control gains the following effects until the end of this turn. This card's activation and effect cannot be negated. This card is unaffected by your opponent's card effects. When an attack is declared involving this card: You can Tribute any number of other monsters that did not declare an attack this turn; this card gains ATK equal to the Tributed monsters' combined original ATK, until the end of this turn. After damage calculation, if this card attacked: You can send all monsters your opponent controls to the GY.