Judgment Dragon's effect does not target, so it can destroy Obelisk the Tormentor.
Yes. Because Obelisk the Tormentor is only protected from card effects that do not target, Tribe-Infecting Virus will be able to destroy Obelisk the Tormentor via its effect.
No, Mirror Force cannot target or destroy Obelisk the Tormentor because Obelisk is immune to card effects that target it. Obelisk the Tormentor can only be destroyed by battle.
Yes. Obelisk is only protected from cards that target him. Dark Hole does not target any of the monsters it destroys, even if there is only one. So it will destroy Obelisk.
It can destroy both the game-legal versions of Obelisk the Tormentor and Winged Dragon of Ra. Widespread Ruin does not target, so can get around Obelisk's protection.
He has 4000 attack power. His effect is you discard two monsters you destroy all monsters on your opponent side of the field.
He can't destroy them by battle, but he can destroy them with his effect. No, Copycat's effect targets, and Obelisk can't be targetted.
In terms of attack, yes, "Obelisk the Tormentor" and "The Winged Dragon of Ra" (if it has enough attack) can beat "Stardust Dragon".However, if you are referring to the destruction effects of "Obelisk" and "Ra", then "Stardust Dragon" does "beat" them since it can negate their abilities and destroy them.
no.
Yes. Obelisk's protections only prevent his summon from being negated, and stops him from being targeted. Counter Traps almost never actually target anything, Divine Punishment is no exception and can chain to Obelisk's effect activation to negate it and destroy him. This means it can be taken out by cards cards that choose by a factor, such as Fissure and Smashing Ground.
This card cannot be set. you must tribute three monsters to summon this card. if this card is special summoned destroy it during the end phase. this card cannot be targeted by spells or traps. you can tribut two monsters to destroy all monsters on your oppoments field if you do this card cannot attack this turn
I'd say that obelisk has the better effect but requires stricter conditions to activate it since, by tributing 2 monsters destroy all cards the opponent controls. But on the other hand slifer does gain 1000 atk for each card in the controller's hand
Yes, it does not target, so can destroy Obelisk, and will destroy Ra too if his ATK is high enough.