Digimon Tamers (2001)

S1E14 Grow Mon Grow

A mysterious ultimate-level Digimon, resembling a tiger, launches an attack, prompting the tamers to spring into action. Rika and Henry find themselves struggling against its overwhelming power. In a moment of self-doubt, Takato engages in a mental dialogue with Growlmon, who reassures him of his worth as a Tamer. Empowered, Takato uses the blue card to Digivolve Growlmon into WarGrowlmon. With newfound strength, WarGrowlmon swiftly defeats the formidable Mihiramon. Meanwhile, Kazu, Kenta, and Jeri watch in awe, deeply impressed by Takato's growth and his Digimon's victory.