"You saved us back at Sickbay with the Tantalus field."
To play this event, you must command three personnel. Remove one of your personnel from the game. Destroy this event.
Card logging info: Logged by openCards team at Jan 1st, 2008.
"Necessary Evil" is a backward compatible card form the Second Edition expansion In A Mirror, Darkly - ST1E compatible (Copyright 2007 by Decipher).
See collectors infos for this card in the Second Edition section under the UCT-ID: ST2E 13 R 29.
Also see here for all trade lists with any card fom "In A Mirror, Darkly - ST1E compatible".