If the creature you control is a legal target but the creature you don't control isn't as Rabid Gnaw resolves, the creature you control will get +1/+0 until end of turn, but no damage will be dealt
Put one of them into your hand and the rest on the bottom of your library in any order
Cards from the set also won't be legal for competitive play until their official release date, but you may still want to test a few new builds with them before your first competitive event
Its a very appealing effect to have against a control deck
Thrakkus the Butcher is a little on the smaller side compared to its full Dragon friends, but when it attacks, it doubles the power of all Dragons you control until end of turn
I always like cards that introduce the monarch to the game anyway, but this one provides some solid recursion for a lot of potent cards that people will want to remove