some things I would change:
- pentagram + mana crystal + battle forge + sersiryx ( + galaxuss) seems a bit expensive and I think it will slow you down too much. In general those cards are always cast in the first 2 rounds. I think you should lose 2 of them and pick a main strategy.
- I would use some more ignites & imps. Place a burn on a guard, teleport your imps in. really swarming with imps can give you a huge action advantage. Maybe add some firebrand imps too.
- Since the deck is not designed to kill the opponent, why would you use explode? A simple dissolve seems better
- same comment about magebane/plagued. Chains of agony could be used on enemy creatures. maybe add a ghoul rot for that purpose? If you want to go for the kill I would lose the galaxuss.
- An enchantment I would love to play in domination is the [mwcard=MWBG1E03]Sentinel of V'Tar[/mwcard].
- Wall of bones! walls are really undervalued. In domination they seem to be even better.
- You know the ravenous ghoul cannot be cast with pentagram? I think your full action is worth a lot (to hit orbs/guards) so I would keep it simple and use living dark creatures. If you really want his speed too attack as soon as possible you can consider charge/force push/teleport. Maybe add a bat? Same opinion about animate dead.
- blood demon is not that usefull without the bloodreaper ability. His bloodthirsty can be a pain in your neck if it prevents you from hitting an orb. (Skeelax seems an awesome choice
)
- no Brace yourself/Defend? they are not really a must but sometimes they really come in handy.
- since you have a decent amount of attack spells (maybe add some more) I would lose the elemental wand. Seems like a waste of mana/actions.
- For extra positioning you could add a couple of teleports, and maybe a [mwcard=MWBG1I01]Cascading Force Wave[/mwcard]
Wow, that was much more text then I intended.