Mnemonica can be used during an order in which the model enters either the dead or unconscious state, provided they were not in a null state at the start of that order (which would cause Mnemonica to turn off, since it's an automatic skill). So for example, an Avatar that passes to unconscious could use Mnemonica, but if it elects not to then it cannot later choose to activate it in a future order if it passes to dead. On the other hand, a Charontid in the No Wound Incapacitation state (which is not a null state) that passes to dead can use Mnemonica.
