Arthur Pendragon, Royal Burn

Ward {2}

When this creature enters the battlefield, choose a color. This creature gains protection from that color until it leaves the battlefield.

{r}{r}, Sacrifice a permanent: Exile the top 5 cards of your library. Until the end of your next turn, you may play any of those cards that don't share both a color and card type with permanents that you control.

The Round Table was simply the Head's challenge, disguised as a gift.