fighting a phoenix would suck... they rise from their ashes reborn. So what, links gotta go back every few years and kill it
As for me I wouldnt mind seeing a Basilisk creature. Would make for a great excuse to add the Mirror Shield and hammer. When the Basilisk attempts to turn you into stone, you use the shield and reflect it on the tail, then go up with the hammer and smash it.
That be kinda cool