Need opinions for "Powerful" card

[VoltzBlast]

"This card cannot be normal summoned or set, it can only be special summoned by tributing three dragon monsters with 3000 or more DEF. This card cannot be targeted by trap cards. When this card is destroyed by battle, you lose the duel. When your life points go under 2000, you lose the duel. Once per turn, you can target up to two monsters in your graveyard and banish them. This card gains 500 atk for each monster removed from play. When this monster goes above 10,000 atk, you win the duel.

 

Any feedback is fine, unless it's just usless.

[Phantom Roxas]

Define "useless". DIVINE cards have really gotten old, and of course the only reason this has the "destroyed by battle" condition is because when it has 5000 ATK, it won't be destroyed so easily, right? Well, maybe if the opponent strengthened their- OH WAIT, BUILT-IN ATK GAIN. Naturally, the intention is keep this around for ten turns so it automatically wins, but there's no point to that because it can the opponent's weak point for massive damage. I guess one interpret the "If this is destroyed, you lose" rule as this being intended to be a Deck Master, but why automatically losing if you're Life Points get below 2000? Is like some kind of shallow attempt to balance this card?

Do you know what would be really useless? Keeping this thread open.