Infernity Doom Dragon [TSHD-EN042] Ultimate Rare Divine-Beast and attack it with this

and attack it with this card

Set: Duel Terminal 5 Card type: Effect Monster Rarity: Common Attack: 1400 Defense: 1000 When this card is Normal Summoned or Flip Summoned

Set: Duel Terminal 1 Card type: Synchro/Effect Monster Rarity: Super Rare Attack: 2800 Defense: 2000 1 Tuner + 1 or more non-Tuner monsters When this card destroys an opponent's monster by battle and sends it to the Graveyard

this card loses 500 ATK during the Damage Step only

Infernity Doom Dragon [TSHD-EN042] Ultimate Rare Divine-Beast and attack it with thisSet: The Shining Darkness Card type: Synchro Effect Monster Rarity: Ultimate Rare Attack: 3000 Defense: 2400 1 DARK Tuner + 1 or more non Tuner monsters Once per turn, if you have no cards in your hand, you can select 1 monster your opponent controls. Destroy that monster and inflict damage to your opponent equal to half its ATK. This card cannot attack during the same turn you activate this effect.