Todays COTD is Supreme King Dragon Darkwurm, a level 4 dark, dragon with 1800 attack and 1200 defence. Being the core monster for the archetype, it comes with a scale of 5 and a tutoring effect. Darkwurm looks beefy and I think it would've looked pretty good as a Super Rare.
 
Darkwurm's monster effects are pretty sweet and simple. First, when it's normal or special summoned, you can add any Supreme King Gate monster from your deck to your hand. At present that's only 2 cards with no more on the horizon, but it does help speed the deck up a little. Second, if you control no monsters, and Darkwurm is in your grave, you can special summon it. Pretty nifty and lets you get it back if its summon is negated or sent to the grave from being Xyz material.
 
And then comes the pendulum effect. If you control no monsters, you can place, NOT activate, a Supreme King Gate monster from your deck in a pendulum zone. That helps out too, and gets round a few cards played that slow down pendulum decks, like Cursed Seal of the Forbidden Spell and Anti-Spell Fragrance, as your not activating the spell card.
 
Darkwurm is a solid card for a rather small and lackluster archetype. I really want a boss' deck to be something good for once, but sadly, Supreme Kings fall JUST short of that.
 
Advanced 3/5 It's good for the archetype and with decent stats, it's just not too good outside of Supreme Kings.