Sometimes you need a specific Pokemon on your Bench, while other times you want to find an Evolution card to combo with your Rare Candy
If you want it, nows the time
The first card I jam is Basilisk Collar, so that Snapdaxs mutate trigger can kill anything, no matter how large
When you do, destroy target artifact an opponent controls
Off the top of my head, in Standard and Modern, it prevents some or all of the use of the following cards: Every flashback card (in particular) Ancient Grudge Desperate Ravings Dread Return Dream Twist Faithless Looting Forbidden Alchemy Mystical Teachings Past in Flames Think Twice Unburial Rites Snapcaster Mage Narcomoeba Reanimate Exhume Every undying creature Every persist creature Gravecrawler Ichorid Ashen Ghoul Proclamation of Rebirth Polymorph Probably quite a few others 1) Drogskol Captain Hexproof is a very non-interactive creature mechanic, making it one of the more powerful mechanics to have been printed in recent years
Works just dont break it with an update Prior to the latest update I would have rated this as a 5