What about Guts cards?

Don’t use those, unless it’s a 3 Guts 3 Wit meme build to try to get a high grade for the achievement. Guts doesn’t scale well into high numbers, so your umas will be weaker than their grade implies and you’ll end up fighting stronger PvP opponents that have actual stats and lose a lot. In later Scenarios, Guts cards can be used and sometimes are the best choice, but in URA it’s not a good idea.

One exception is Ines Fujin, who gives a Golden Recovery Skill that’s exclusive to Front Runners. Also, the free Urara card is pretty generically good, you can just throw her into a build to replace a weak card and not click Guts – she’s basically a Pal card and is quite useful in upcoming scenarios.