That's not to say they're bad cards -- there's a lot of good ones at this point to fill your deck with -- but they're not the best at what they do so there's less demand
For an open meta, here is the Blazing Infect deck that I would recommend: As you can see, theres very little difference between the lists
This is a huge markup, so if you're looking to buy, be sure you're 100% informed of what you're paying for
If that very question is on your mind, then youre in luck
In addition, it shuffles your graveyard and library for free when milled by effects such as Oath of Druids
Shimmer Dragon ( F, T ) - This card is amazing in a treasure deck, as every 2 treasures draws you an extra card every turn