Gengar Exs main drawback is the weak stats of its pre-evolutions, Gastly and Haunter, making it a mountain to climb to reach Gengar Ex
This is a decent way of just trying it
In the TCG , this set became legal for premier events on September 1, 2005
Casting it this way gives all your creatures this effect, potentially letting you slip through a board wipe while also dishing out a ton of damage
Id be happy to run a few copies of Sphinxs Revelation alongside Obzedat, but such a greedy combination of UU, WW, and BB is only achievable in a heavy Esper Control list, which I wouldnt build until the new aggressive decks appear and stabilizeand which will probably not run any Orzhov cards besides Obzedat
Finally, Card of Safe Return bestows huge amounts of card advantage with both Manticore and Revival Jam