History Recap / Supergirl2015S3E23BattlesLostAndWon

* ChuckCunninghamSyndrome: While listing all the reasons for why he can't just go to the future, Winn doesn't even mention his alien girlfriend Lyra, who hasn't been seen all season, or his mother, with whom he has reconnected after all these years.

* DidntSeeThatComing: Turns out that stopping the Blight saved billions in the future... including the ''original'', evil Brainiac.

* ChuckCunninghamSyndrome: While listing all the reasons for why he can't just go to the future, Winn doesn't even mention his alien girlfriend Lyra, who hasn't been seen all season.

* FamilyUnfriendlyAesop: Kara sees the deaths odd Alura, Sam and Mon-El as a consequence of her compromising her values by killing Reign. So the second time around she's merciful enough to let her be dragged to a FateWorseThanDeath instead. Because somehow that's more heroic.

* PutOnABus: Both Chris Wood (Mon-El) and Jeremy Jordan (Winn) depart as regulars here, as does [[Creator/OdetteYustman Odette Annaable]] (Sam/Reign).

* NonActionBigBad: Despite them [[Recap/Supergirl2015S3E22MakeItReign previously]] being a major threat to normal humans, it turns out none of the three Kryptonian witches fare well in combat when going up against other Kryptonians like Kara or Alura, hence why they typically prefer to have Reign do the dirty work for them. (They can't even use the excuse of not being familiar with having superpowers considering Alura adapts ''very'' quickly.

* WhamShot: The episode and season ends with a doppelgänger of Kara inexplicably showing up in Siberia.

M'yrnn gives his life to stop the terraforming. But the Daughters of Juru will not be so easily defeated.

* EleventhHourRanger: Samantha's inward spiritual journey unlocks her Kryptonian powers, allowing her to join in the battle against Reign and the witches.

* BackForTheFinale: Imra and Brainy.

* BittersweetEnding: M'yrnn gives his life to stop the terraforming. Mon-El, Alura, and Sam die in the final battle, but Kara uses Mon-El's Legion ring to back through time and stop it. Reign is stopped by Kara and Sam, but as a consequence there's another Kara in Siberia. However, Mon-El still has to return to the future to stop Brainiac, and Winn goes with him. But Selena and her cult will stand trial on Argo. And Sam is finally free from Reign and is human again.

* ChuckCunninghamSyndrome: While listing all the reasons for why he can't just go to the future, Winn doesn't even mention his alien girlfriend Lyra.

* MythologyGag: J'onn leaving the DEO to live among humans is just like his final arc in ''WesternAnimation/JusticeLeagueUnlimited''.
* NonActionBigBad: Despite them [[Recap/Supergirl2015S3E22MakeItReign previously]] being a major threat to normal humans, it turns out none of the three Kryptonian witches fare well in combat when going up against other Kryptonians like Kara or Alura, hence why they typically prefer to have Reign do the dirty work for them.

* PutOnABus: Both Christopher Wood (Mon-El) and Jeremy Jordan (Winn) depart as regulars here, as does [[Creator/OdetteYustman Odette Annaable]] (Sam/Reign).

* WhatHappenedToTheMouse: Coville is last seen unconscious in the pilot seat of J'onn's ship, presumably having succumbed to his wounds, but the episode never follows up on it.

** And now that Kara has a Legion flight ring, it becomes that much less likely that we'll ''ever'' find out why [[http://tvtropes.org/pmwiki/pmwiki.php/Recap/Supergirl2015S1E15Solitude Clark already has one in the Fortress of Solitude]].

* InSpiteOfANail: A BadassNormal VigilanteMan who is [[SecretIdentity secretly]] a well-off and prominent individual outs himself to the public, much like what happened in the SeasonFinale of [[Series/{{Arrow}} another]] Series/{{Arrowverse}} show.

** Mon-El gives his life to stop Reign from killing J'onn, though Kara undoes it with time travel.

* NonActionGuy: Despite them [[Recap/Supergirl2015S3E22MakeItReign previously]] being a major threat to normal humans, it turns out none of the three Kryptonian witches fare well in combat when going up against other Kryptonians like Kara or Alura, hence why they typically prefer to have Reign do the dirty work for them.

* PutOnABus: Both Christopher Wood (Mon-El) and Jeremy Jordan (Winn) depart as regulars here, as does Odette Annaable.

* PutOnABus: Both Christopher Wood (Mon-El) and Jeremy Jordan (Winn) depart as regulars here, as does Odette Annabelle.

* PutOnABus: Both Christopher Wood (Mon-El) and Jeremy Jordan (Winn) depart as regulars here.

* ShoutOut: Kara makes a ''Franchise/StarWars'' reference and is quite aghast when Brainy doesn't get it.

* TheStinger: The episode ends with Lena revealing she still has a piece of the Harun-El to experiment on, and a doppelgänger of Kara inexplicably shows up in Siberia.

* BatmanCanBreatheInSpace: Averted, Kara needs the Legion Ring to do so.

* JumpingOffTheSlipperySlope: Lena lied about giving all of the Harun-El to Alura. She still has enough left to experiment with on her own; as a scientist the temptation was too much.

* ATasteOfPower: Samantha briefly gets Kryptonian powers to aid in the fight against the Worldkiller cult, but by the episode's end her DNA has reverted to being 100% human.

** Mon-El and Imra. Imra even remarks the distance made her realize that their marriage was never going to work since it was never based in love.

* LetsYouAndHimFight: Kara faces off against Reign, while Alura dukes it out with Selena.

* WhamEpisode: Mon-El and Winn leave for the future, while J'onn steps down as Director of the DEO and gives Alex his job, while he decides to wander the Earth.

My'rnn gives his life to stop the terraforming. But the Daughters of Juru will not be so easily defeated.

* AmicableExes: Mon-El and Imra. Imra even remarks the distance made her realize that their marriage was never going to work since it was never based in love.

* BittersweetEnding: My'rnn gives his life to stop the terraforming. Mon-El, Alura, and Sam die in the final battle, but Kara uses Mon-El's Legion ring to back through time and stop it. Reign is stopped by Kara and Sam, but as a consequence there's another Kara in Siberia. However, Mon-El still has to return to the future to stop Brainiac, and Winn goes with him. But Selena and her cult will stand trial on Argo. And Sam is finally free from Reign and is human again.

** My'rnn gives his life to stop the terraforming of Earth.

* KilledOffForReal: Although most of the deaths in the episode are undone, My'rnn is gone for good.

* PutOnABus: Both Christopher Wood and Jeremy Jordan depart as regulars here.