Hero Heart [DR04-EN157] Common SWSH191 select 1 FIRE monster with

select 1 FIRE monster with 200 or less DEF in your Graveyard

You can only Special Summon "Canon the Melodious Diva" once per turn this way

Set: Dark Revelation Volume 4 Card type: Normal Spell Rarity: Common Attack: 0 Defense: 0 Select 1 face-up monster you control to activate this card

When it is Special Summoned by this effect

Set: The Dark Side of Dimensions Movie Pack: Gold Edition Card type: Continuous Trap Rarity: Gold Rare Activate this card by targeting any number of Level 4 Machine-Type monsters you control

Hero Heart [DR04-EN157] Common SWSH191 select 1 FIRE monster withSet: Dark Revelation Volume 4 Card type: Normal Spell Rarity: Common Attack: 0 Defense: 0 Select 1 face up "Elemental HERO" monster you control. This turn, the ATK of the selected monster is halved and it can attack twice during Battle Phase.