Bolt SpiderYesterday, when posting about Ultimate Tournament Pack 2, Gravekeeper's Watcher had an erratum for its card text. Initially, the text was updated to Yu-Gi-Oh! Neuron shared what Asian-English text had, but it was adjusted to its current text. This has also been corrected in the original article here.
The updated effect is as followed:
When your opponent activates a Spell/Trap Card or monster effect that includes an effect that makes them discard a card(s) (Quick Effect): You can send this card from your hand to the GY; negate the activation, and if you do, destroy it.
The updated effect is as followed:
When your opponent activates a Spell/Trap Card or monster effect that includes an effect that makes them discard a card(s) (Quick Effect): You can send this card from your hand to the GY; negate the activation, and if you do, destroy it.