#3 Barcelona's attacking mentality
The Catalans have found a new lease of life under Ernesto Valverde who was struggling with his defensive tactics last season. Barcelona have looked a different team in this campaign altogether, with their explosive front three and sublime midfielders.
New signings like Dembele, Coutinho, and Arthur have also constantly threatened the opposition with their skills and chemistry with teammates.
Messi also has an excellent scoring record against La Rojiblancos, as he has found the net 28 times in 36 games against Atletico Madrid. His collegiality with Luis Suarez will also prove to be decisive in this epic battle. The duo have scored more league goals so far (18) than the entire Atletico squad combined (16).
Valverde's men will be looking to demolish Simeone's regime and defend their LaLiga title once again. Saturday's league clash at the Estadio Wanda Metropolitano should once more see a goals fest, as none of their last 17 meetings have ended goalless.