Plants for a Corn's live terrarium

I'm planning to build a live terrarium with plants for my Ghost corn snake, I have ideas of plant types I might want to use though I am curious if any of you have suggestions.

I'm keeping Baird's Rat Snakes (same size as a corn snake) in a bioactive planted setup. The only plant that's done reasonably well so far has been the Korean Rock Fern. The other plants I bought as clippings, hoping they would root and vine around the floor of the terrarium. Unfortunately a full grown rat snake killed the crap out of it. I imagine they would have done better if I'd gotten them in little pots instead of as clippings.

So my main advice is the fern, and don't buy anything as a clipping unless you can plant the tank a month or two before the snake is added. I have pothos which is a vine that has grown very well in other terrariums and I'm debating on just adding that because it grows REALLY fast even from a clipping but its a clipping that I did from a house plant so I can plant it immediately which might make the difference. After they sit in the mail they need time to recover.

oh yeah... you really need to root (in a cup of water or something) a plant, then into a small soil plug, before introducing it to the soil of a terrarium. need to get those roots "rooted" to give it a fighting chance to take hold.

Thank you for the plant suggestions, I can get Pothos just about anywhere... I'll have to look into "Korean rock fern" though, never heard of it...