As the battle commences, both sides will enter Turn 0 or a startup phase. Commanders and monsters that have skills labeled as Startup will activate their skills here.
Eight Turn Rule
Every battle will last for exactly eight turns. Any buffs or debuffs that a monster receives will be applied in the upcoming battle. This means that if a monster receives an attack buff, that additional increase will apply during the next turn, and onwards.
The order of which monster attacks first is determined by their Speed (SPD) parameter. Monsters with the highest SPD will attack first for each turn. If a monster is buffed or debuffed during a turn, the turn order will be re-determined in the next turn.