But it’s not a fair fight if I have to fight against a sword!

Actually, weapons and illegal moves are cards that are used as a sideboard. Only if your opponent agrees to play “anything goes” styles, can you add them in your deck because of the huge advantage it gives you. But on the other hand, there are certain things that can happen when fighting bare-handed that can remove weapons from the player (leaving them with a bunch of dud cards in their deck as a penalty) or to dodge/diffuse those attacks (coming soon in our first expansion!).