Eternity's End (WC3 NightElf)

Eternity's End is the cinematic finale of Warcraft III: Reign of Chaos, which takes place after completing the final mission of the night elf campaign Eternity's End.

It shows Malfurion Stormrage using the primal fury of Nordrassil and hundreds of nature spirits to defeat Archimonde, sacrificing the night elves' immortality and causing a devastating shockwave.

In World of Warcraft
In World of Warcraft, these events can be seen during the final stage of the Archimonde encounter in the Battle for Mount Hyjal raid.

Trivia

 * According to Nick Carpenter, the cinematics team had "probably 50 different takes" of the shot in which new roots are seen growing out of Nordrassil, with many versions of the roots looking off or too spaghetti-like. Eventually a couple of artists made the effect work, but according to Carpenter it was definitely one of the hardest things the team had ever done.
 * When the gathered mortal armies are shown in the backdrop, these are actual renders of night elf, orc, and human units doing their animations, albeit with slightly altered textures.
 * Nick Carpenter originally considered giving the cinematic music that felt more "in your face", but giving it more serene and surreal music ended up working out better.
 * According to former Blizzard game designer David Fried, towards the end of Warcraft III's development there was significant internal backlash against "the ending cinematic where Archimonde is attacked by night elf tree sperm". Fried recalls how there was "all sorts of meetings and infighting about it", and how Rob Pardo rounded people up to "basically attack the cinematics department for giving us something nigh-unusable". In the end, the team made the cinematic work, but the joke about Nordrassil "jizzing" on Archimonde persisted and came up at least once or twice a month until the game shipped.