Another pro is that your opponent will likely use their spell/trap destruction cards on this to get access to their cards again so it acts like a cyclone lightning rod so to speak, protecting your other set spells/traps
I love going first and setting this thing, then seeing the other guy set two cards which 9 times out of 10 are Wall of Disruption and/or Enemy Controller. It's so satisfying to lock down those overused meta cards and just PUNISH.
No, this only can only stop them from being activated it cannot negate the effect you'd have to use it before they activate which is what makes this card not too great because everything meta is quick-play or can be activated as you use this.
This card is pretty dumb to me, I have three and thought it would work great. It says "The selected Spell or Trap Cards cannot be activated." Which is a lie because righ after I selected two set cards they activated on. Which is beyond dumb. IDC if they are quick play chain or not. It states they can not be activated and literally right after you activate this card they can activate theirs. This card should say activate this card to select two set spell/trap cards your opponent controls. Your opponent must activate them now or will not be able to activate them. Because that's what it really does.
Chains work bottom up so your card activates last in the chain,Even though you activated it first...
Counter traps like "counter counter" or "double snear" will stop that them chaining or even bait out there chain.
Almost no card can chain after a counter trap