Tai obtains the Crest of Courage. His digimon partner is Augmon.

Botamon (fresh level)

Digivolves to...

Koromon (in-training level)

Digivolves to...

Agumon (rookie level)

Digivolves to...

Greymon (champion level)

+ =
Digivolves to...

Metalgreymon (ultimate level)

Digivolves to...

Wargreymon (mega level)

+ =
DNA Digivolves to...

Omnimon (mega level 2)