He wasn't a stranger to the composition of three-star jet stream cards, since he'd modified the Silver Star's jet stream card. As it happened, his modifications had a lot of similarities with that 'mud fish' jet stream card, except that its composition was much more ingenious. It had more channels to distribute the flow, and had a much higher degree of difficulty to make. And it could be much more precisely controlled than the one he'd modified. His modifications would be considered very rudimentary in comparison.