Conspicuous Human Opponent Behavior
This Player has had at least two separate instances where a Human opponent will play the game as normal, but out of nowhere they cease playing the game. They do not concede or stall. From observation the Opponents will play a selection of cards to a certain extent before ceasing altogether. The behavior is strangely reminiscent to a pre-programmed bot carrying out instructions only to soft lock when met with an unexpected outcome.
The latest instance is logged below where the Opponent opened with a Swamp followed by Mox Amber only to suddenly stop playing without conceding.
The previous, albeit unrecorded instance, was an Opponent who by all rights should have won the game with a board state that this Player had no means of countering. The Opponent in this instance had two Platinum Angels on the field, but would only attack with life gain whenever they dropped below zero. Instead the Opponent just sat there and did nothing for three turns before timing out. As though the Opponent had expected this Player to zero out of life total after enough damage was dealt without accounting for this Player's means of life gain. Only to stop after perceiving a false positive to "winning" the match.
This Player has no data to work from the prove these suspicions, but the empirical evidence suggests the presence of bot players with predefined tasks on the server.