One of the early episodes has a short scene where Rika uses a modify card with Thor’s Hammer. Which I thought was awesome.
I don’t think it had much of an effect, but I really wish the show had more stuff like that. More interesting modified armor and weapons. It seemed like a fun mechanic that they just seem to ignore mostly later on.
Anyway this is a drawing of Renamon with Thor's Hammer, and Rika in the BG with the card.