Shamrock Rover
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Or they could have just not stolen anything, even though everyone loves that version.
It doesn't make sense. They had three Neutral Buildings, one for each, Virus B didn't kill, it doesn't seem like he used "Power Outage" as his ultimate, so either he stole or didn't use the Neutral Buildings.
Added 3 minutes later
And I don't understand why they're punishing that newbie.
Well, the clue is - "signed the surrender" - May 8th in Al-Pazarona's profile. Many people said it was too obvious, but nothing better has been found. And is it really that simple? I wouldn't have found it if you hadn't suggested that the clue was "signed the surrender," and in general, there have been clues of similar difficulty before.