In the game (root), there is a type of card called Favor cards (there are only three). It clears all enemy pieces in a specific clearing. And is too powerful, because yea.
It requires whoever plays it to have buildings in three out of four of that type of clearing
But the vagabond only has their player piece, no buildings or warriors. They craft cards with hammers, which other players have to give to them (Well, they start with one, and I think they might be able to get one, but in order to get three, they need another player to craft a card that creates a hammer, which the Vagabond can take).
Each hammer counts as a building in a separate clearing, so all a three hammer vagabond has to do is… move into the same clearing tho and play the card. Thankfully, the card is rare.
REMEMBER, THE BAD GUY IS NOT THE CATS NOR THE BIRDS. ITS THE VAGABOND.