The one wrinkle for beginners is that five-color mana base, but the Draconic Domination preconstructed deck handles all of that for you out of the gate
Let me know which cards are giving you nightmares in the comments below!
Howl of the Night Pack is insane but only if your deck runs a lot of land ramp and is heavily skewed towards Forests
For its part, Kazamdu Mammoth is potentially an excellent card
Sludge Crawler, Reaver Drone, and Bearer of Silence are all great options for what our deck is trying to do
When a Siege is defeated, it is exiled, and its owner gets to play the reverse side (which could be a Creature, Artifact, or some other MTG card type) for free at Instant speed.