This was a fun card to create. I made a little 3D scene to start with using Blender. I basically had a big blob for the krasis, but it provided a good solid foundation to work with. I had fun with the creature design. He is a little clumsy looking, like a bulldog puppy playing with new toys. I wanted it to look dangerous, but due to some evil nature, but more the way a predator in the wild is dangerous to it's prey.
click to enlarge
and the card...
A bonus! Wizards created a great video to introduce the card.