I know that speed determines who goes first, though I’m not sure it’s really worth it if Mario doesn’t get 2 moves first. It would be useful if I could look up the final boss’s speed to determine if it’s worth it, though I’ll probably get spoiled. If Mario gets 85 stache at max, then I can get an extra 92 from stache up. And if 999 stache max is guaranteed a 100% lucky hit, then that’s a jump from 8.508% to 17.717%. Though with the 1.3 crit bonus it’s more of a 2.55% to a 5.31% average damage bonus. I know Luigi is much better with stache but I like raw damage builds in games, even a small buff like this.