Not sure if this thread is intended for general discussion of strategies or just the specific ones already mentioned, but if it is the former:
One thing I have noticed about Domination is that short-term defensive spells become much more powerful, since the game is on a time limit. In particular, If you have a V'tar advantage and prevent your opponent from upsetting it before the end of the game, you can almost guarantee a victory several rounds in advance (which is kind of an obvious statement, but it still bears saying). The thing about short term defensive spells (Block, cheap walls, Brace Yourself, Banish, etc) is that they tend to be very good in the short term; better than spells designed to last longer.
One of my favorite decks was a "deterministic" Johktari. The strategy used her speed to gain an early V'tar advantage, and then use a spellbook loaded with short-term defensive spells to prevent her opponent from ever changing the balance of V'tar. She didn't even need many orbs; it was possible to calculate how long until I won, and determine the exact number of orbs I needed to keep away from my opponent to do so.