Backfire [SDOK-EN031] Common Flip/Effect Monster Set: Destiny Soldiers Card type:

Set: Destiny Soldiers Card type: Effect Monster Rarity: Secret Rare Attack: 0 Defense: 0 If you have 3 or more "Destiny HERO" monsters in your Graveyard: You can discard this card

You can only Special Summon "Cyberse Converter" once per turn this way

Set: Legacy of Darkness Card type: Normal Monster Rarity: Common Attack: 1600 Defense: 1800 The Commander of Machine-Types

While "Umi" is on the field

Backfire [SDOK-EN031] Common Flip/Effect Monster Set: Destiny Soldiers Card type:Set: Structure Deck: Onslaught of the Fire Kings Card type: Continuous Trap Rarity: Common When a FIRE monster(s) you control is destroyed and sent to the Graveyard: Inflict 500 damage to your opponent.