Atlantis assailed by the stuff of nightmares,
While the team will explore that dark sunken lair.
Sounds like 'Echoes' because the whole of the population was affected. However what they experienced was projections, not nightmares. The only ep where we know about nightmares was 'The Real World'. The 2nd line is for 'Submersion'.
For one player worship, adoration and fame,
As he and his rival find itís more than a game.
Both referring to 'The Game'
Receive a grand gift from an all-seeing shaman.
Find the wraith and our allies have something in common.
First line is a bit mirky, but I think both are from 'Common Ground'.
'Shamanism' is to do with life, healing etc. Shep received the ultimate gift out of anything 'life'. The 2nd line could be referring to 'First Strike' where perhaps the Atlantis team let the Wraith know about the Asurans to see if they go & try to take them on, buying them time from the impending attack. Although it also uses the words wraith, allies & common. All of which were predominant in 'Common Ground', Wraith became an ally temporarily. Thus they both have something in 'Common'...escaping to their freedom.
Alternate could be from 'The Quest' where Jackson is made a Prior by the Ori. Who are ascended & see everything!
A tech-savvy group who progress via pillage.
A wild west High Noon in an inapt Dutch village.
Both seem to be from 'Irresponsible'. While the Genii aren't as advanced as the SGA team, they still can do some advanced stuff for a species of Pegasus. Such as having computers, nukes etc in 'Underground', Getting the data device, being able to access it & knowing what it was etc. Then coming to Atlantis & being able to operate parts of it.
Pillaging is what Kolya's men were doing in 'Irresponsible'. Line 2 is end theme of the ep, the high noon wild west stand-off. While the ep was set in a 'Dutch Village'.
Another alternative for line 1 is the Lucian Alliance' who were able to board & operate the Odyssey in SG-1.
Too late the value of that friendship heíll learn.
A strange disappearance feeds anotherís dark turn.
Seems to be about Michael's return, Beckett's disappearance in 'Vengeance'.
Find survivors concealed in an orbiting rock,
While the thinker receives an enlightening shock.
From 'The Ark' is part 1, line 2 could be about McKay getting a physical shock from screwing around at the end of the ep trying to switch something off. However it's most likely to be from 'Tao of Rodney' where he did get zapped & had to find enlightenment or he would die.
Mutations discovered, OíNeill is all wet.
With a change of location all will forget.
Mutation is probably the Asurans evolving in 'The Return 1 & II' where they overcame their base program & were able to attack their creators. O'Neill goes swimming in this ep so gets wet. While they did get a change of location in part 1, as they were forced to leave the city & return to Earth.
Hyperionís wrath threatens total destruction.
Our hand will be forced by ominous construction.
Probably to do with 'First Strike', the season finale.
Hyperion is from Greek mythology & the Asurans want to wipe out & kill them all now more than ever after being caught out twice before by the same people. 'Apollo' is send by the IOA & SGC to launch a pre-strike on the Asuran homeworld because intel has leaarned that they are building ships & also know the location of 'Earth'.
Carter arrives; a reunion of sorts.
One of our own the enemy courts.
First part looks be be from 'The Pegasus Project' where McKay & Sam were re-united after his hallucinations in 'Grace Under Pressure'. Line 2 is most likely from 'The Quest II' where Adria is after Jackson to make him a Priror, although it may also be from 'Sateda' where the Wraith king was desperate to get Ronon running again.
Isolation imposed and a grand battle looms,
While an alien contact this player dooms.
Line 1 is from 'First Strike' where the city gets cut off & isolated from Earth come the end of the ep.
Line 2 could & probably is from the same ep with the whole 'Apollo' going after them first thing. Although if it's not from that, then it's most likely from 'The Game', because they were contacting an alien planet with instructions that almost brought them to war & doomed them to destruction.
Self-doubt for one, parenthood for another,
And that brilliant young mom may be needing her brother.
Both seem to be from 'McKay & Mrs Miller', he's maybe having doubts while she chose parenthood. If it's not from that, then it's obviously from 'Family Ties' of SG-1. 2nd line definitely from 'McKay & Mrs Miller'.
From innocents lost heíll produce strict adherence
While the late fallen one makes a surprised reappearance
Sounds like Michael & his human experiments. Although it could also be referring to DJ as his actions as a Prior.
2nd line also sounds like Michael's return in 'Vengeance'. He looked to have been killed in 'Misbegotten' so him retunring would be a total surprise to the Atlantis team.
It may also be to do with DJ. H egoes missing in 'The Return II', then they get a shock the next time they see him in 'The Shroud'.