Latias was originally a Latios. Although, I found out extremely quickly that Mega Manectric was a real problem. So I replaced Latios, with Latias. Plus, Latias can provide late game support with Healing Wish, healing anything crippled, or extremely low hp mons back to full hp. Latias is also my only way to remove hazards. Since Raikou and Landorus-T form a Volt-Turn combo, hazards is going to be really annoying since they don't have any form of recovery bar Leftovers which none of them has. Latias can take a hit from Mega Manectric and hit it hard with either Draco Meteor, or Psyshock, making it easier to kill with Priority Sucker Punch, or if it's low enough, Bullet Punch.