Can negate the effect of your opponent's monsters, disrupting their plan.
Destroys the monster that this card targets.
Requires a discard of 1 card to activate.
Against normal monsters like dino decks, this card can be a dead card.
It's recommended to not put more than 1 copy in a deck, since it relies on your opponent's monster activation, also since it requires you to discard a card from your hand and getting draws can be difficult. You can use it early in the duel to get an advantage by destroying the monster or save it until they start summoning monsters like Gravekeeper's Oracle or Levia-Dragon - Daedalus to destroy them and ensuring victory.
Did you forget that this card is a counter trap card??? It's a spell speed 3 card, which means that only other counter trap cards(like dark bribe) could negate it and destroy it!!! All counter trap cards have a great advantage, because they have the highest spell speed in the game, so normal traps, spells, monster effect cannot be activated in response to their activation!!!
To be honest the Egyptian Gods should be completely immune to spells, traps, and monster effects. There are so many other monsters in the game with far greater effects on top of negating or immunity. The Egyptian gods in duel links are useless. I don't use them, but I was curious one day and decided to play one. My opponent activated a trap card, selected my Obelisk and sent it to the graveyard.
Did you read his effect Malik?! He is effected just not when he summoned so if he is summoned with sphere mode he is destroyed if he destroys a monster with 1000 L.P he is destroyer so yes it does work. Keep in mind Obelisk is the only god card that isn't effected by spells and traps (mostly)
Slifer/Ra/Obelisk are immune only during their summon.
Later, Ra/Slifer are exposed to any spell/trap.
Obelisk instead is untargettable, but this card doesn't target, so if Obelisk activates his effect this card can destroy Obelisk.
That's is all!