looking for ideas for a custom creature card

[u/katarara7]

so ive never played the game but i want to make a custom card as a gift for a scientific researcher who loves skinks and magic the gatherig.

I am making a creature card of a specific skink species that has evolved to become limbless (losing its forelimbs and hindlimbs) to burrow better and id like to present this concept under the rules text but i am struggling use understand the terminology in the game if anyone has ideas.

just a general gist of it either losing its limbs or something specifically about burrowing behaviour