Who is Aunt Tillie? It’s just a slightly odd way of saying that any troop, no matter how weak or unqualified, could fit in the team - e.g., “As long as you have X, Y, and Z in the team, my Aunt Tillie could be the fourth and it would still win.”
My recent favorite is Amarok, Thrall, Tink Steamwhistle, and good old AT. Essence of Evil and Doomed Blade work well here if you want to level a hero class. Some sort of double purple banner will let Thrall fill on any purple match. The red and yellow storm helps with Amarok’s devour and gives Thrall a shot at an extra turn. Devour streaks are great fun, though it can turn into a bit of a slog if you lose Amarok or he consistently fails to devour. Fortunately, Tink is ready with summons if you lose a troop or two. Really fun for pet battles and decent for D12 explore as well.
What other AT specials do you have?