Well you guys must be new around here. Foolish Burial is definitely one of the best cards in whole game. Would be easily an UR but I think it is too broken for Duel Links at the time.
Any card that was limited in tcg-ocg, even for a short period of time in yugioh history, should never had been released in duel links. Foolish burial should never get released.
Sooner or later these cards will become a problem. Just like "the grass looks greener". There are tons of other cards to be released. I believe we can still play the game without the overpowercards and the monstrosity TCG has turned to.