The Crest of Kindness - S2.E21

During Kimeramon and Magnamon's fight, Wormmon sacrifices his life energy to give Magnamon the strength to defeat Kimeramon. Wormmon dies, and Ken is forced to accept that the Digital World was real while facing his past. The Digi-egg of Miracles disintegrates into the Crest of Kindmess for Ken, and with the Digimon Emperor gone, the DigiDestined return home.