If you are interested, head over to my CubeTutor link, and try drafting it for yourself
Oh, and the best card in the game due to its low mana value and high impact
Now that you have a Dinosaur Dragon out, you can activate Draconautics Engineers first exhaust ability for one red mana to give all your other creatures haste for the turn and a +1/+1 counter on the Engineer
In 1v1 this can be a devastating way to curse your opponent with cards like Overwhelming Splendor and Maddening Hex
This is, in essence, a sort of reflavour of Morph and Megamorph, and has cards coming in facedown as 2/2 with Ward 2
Arcane Signet is a 2-mana rock that instantly fixes your mana, or at least gives you access to all colors in your commander's color identity