Byzantium Radiation — At the beginning of your upkeep, put an exposure counter on Aplan Mortarium. Then you lose life equal to the number of exposure counters on it. Whenever chaos ensues, create two 2/2 black Alien Angel artifact creature tokens with first strike (This creature deals combat damage before creatures without first strike.), vigilance (Attacking doesn't cause this creature to tap.), and "Whenever an opponent casts a creature spell, this permanent isn't a creature until end of turn."