The idea is that Mawile and Rilla Wallbreak and then Ash Gren Or Z Kommo O can win late game. The team has very great synergies in Spikes + Mawile, Double Intimidate, Grassy Terrain for Maw, Moltres + Maw, etc. Moltres takes on all Steels, Fires and to some extent Grounds that theaten Maw.