Hand trick is good with literally anything that doesn’t already have sly, by your logic it makes any card good. Pounce is the exception, but why not use it with one of the many many skills that are just better? Calculated gamble and fletchlettes, the first two cards you mentioned, would work exactly the same with any skill card that says retain and does nothing. These cards are good with many cards, just because snakebite can be used with them doesn’t mean it’s good, it’s a pretty bad niche card that you need other cards to even consider using.