Lizardon may be a combination of lizard and either dragon or don (Ancient Greek for tooth , commonly used in dinosaur names)
The shadowed border to artwork was only added in a later print run
That is, they're presented as cards all their own rather than using the Godzilla cards method of having the Godzilla card be essentially an alternate skin, as shown below here: This was a sweet and elegant solution that could have easily been applied here - even if they were to cards that didn't already exist
Like most Magic: The Gathering cards, the value of Lukka, Bound to Ruin depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Phyrexia: All Will Be One)
People have compared it to The One Ring, which isn't that far off if you focus solely on the card draw