If you don't have "Neo Space" on your field, use this card's effect on itself, so it won't return to the Extra Deck. But since his effect negating effect will be negated, that means he can't use it again. So be sure that's what you want to do.
If you have "Neo Space" out, you can select an opponent's monster that has an attack increase effect. Then summon "Neo-Spacian Dark Panther" to steal its effect while pinning down the enemy.