You can discard 1 Spell/Trap, and declare 1 "Artmage" Monster Card name that is not among the monsters you control and has not been declared for "Artmage Academic Arcane Arts Acropolis" this turn
removing the token can disable almost all of the interaction the engine can use
[1] A player may opt to use sleeves for their Extra Deck that are different to the ones of the Main Deck
First, if the card you try to activate has multiple effects (for example Pot of Desires), the Hand Trap may stops one of those but you may still attempt to use another
And once they were in, I was only able to get them out by taking the sleeve off of my phone unless I wanted to physically hold it down
GR Gold Rare Imperial Tombs of Necrovalley X TRAP Counter When a Spell/Trap Card, or monster effect, is activated, while both a "Gravekeeper's" monster and "Necrovalley" are on the field: Negate the activation, and if you do, destroy it