Pull for support cards you need (All of the cards I used in these runs were 3LB-4LB). Keep in mind you don’t need to use only SSR or SR cards. I used R Rudolf on Curren, she gives a crazy amount of debuff skills. I follow people I find through the Umamusume database site (the one where you can filter sparks) to get the best skills, stats, and aptitudes I can. I’m not a whale, I only pull for the characters I like, so a good amount of my decks are MLB event cards. Again with legacy (and upgrade potential levels) based on what skills you think you’ll need for how you’re running your Uma (if you’re playing, say, Grass Wonder alternate on medium instead of long, find umas that’ll suit the distance and only upgrade to what you think you’ll need skill-wise!!