The only restriction is it can only be played once per turn, and it places both in defense, but these seem distinctively less relevant as far as limitations to the card
Heres a quick summary why Gruul Sleeves should be at the top of your list: Guild Inspired Design: Red and green colours that reflect the power of the Gruul Clans, show off your love for the wild and primal nature of the guild
Theres a new trainer in Lusamine, Zeraora, and what appears to be an immersive Rowlet
Starting out with Jumpstart and Foundations , before checking out Battle for Baldurs Gate and dipping into Standard products like Outlaws of Thunder Junction and Tarkir: Dragonstorm can give any collection a really strong start
Even outside of this, Wraiths are getting renewed interest thanks to some unofficial leaks, and Wizards (the creature type) are making a tiny resurgence in competitive formats