Do roaming legends not spawn in mission 5?

[Boggaspotatoe]

I read it from here:

Collaborative Legendary Pokemon Guide

Hmm I guess this is probably the best place to detail the mechanics for them. Entei, Suicune, and Raikou are now more commonly found if you have certain abilities in your party. For Raikou those abilities are Lightning Rod and Volt Absorb. For Suicune those abilities are Storm Drain and Water Absorb. For Entei those abilities are Flash Fire and Blaze Boost. These abilities stack with one another but each ability does not apply more than once. The equation for determining the probability (%) …