Assault Rift Beast - Hellfire Burst Zero Dragon

1 "Rift Beast" monster + 1 DARK Pendulum Monster
When this card is Special Summoned: You can target 1 card your opponent controls; return it to the hand. Once per turn: You can target 1 Spell/Trap Card you control and 1 card your opponent controls; destroy both targets. If this card destroys an opponent's monster by battle: It can make a second attack in a row, and if it does, this card gains 400 ATK until the end of this turn. If this card is used as Material for an Impure Summon: You can target 1 face-up Spell/Trap Card you control, then target up to 2 "Blood Moon", "Rift Beast", or "Crimson Eclipse" cards in your Graveyard; seal the first target, then add the targets in your Graveyard to your hand. (A Sealed card is flipped face-down Attack Position until the end of this turn.)

???