These card are none other than (from left to right) AncientGreymon, Lucemon and AncientGarurumon. Lucemon is illustrated in his rookie form, with a sillouette of Chaos-Mode behind him. Meanwhile, AncentGreymon and AncientGarurumon, two of the 5 Warriors of Justice (and also the last two standing in the final battle against Lucemon) are depicted at both sides of Lucemon. The illustrator of this master piece is none other than Naochika Morishita.
Naochoka Morishita is a Japanese illustrator. Having worked in editorial production with Group Caramel Mama, he became freelance in 1999. He is mainly active in trading card games like Gundam, Ranger Strike, Battle Spirit, and recently of course, joined the Digimon Card Game team in 2020. I was totally impressed with his art: his famous work were from the Bloody Roar series where he did the character art as well as in-game cutscenes and magazine illustration for V-jump.