The act of intentionally failing to deal damage in combat while maintaining aggression from an opponent is a training method employed within Old School RuneScape (OSRS). This process, often referred to by its specific mechanics, allows players to accumulate experience in desired combat skills without actively participating in combat. For instance, a player might equip armour that provides high magic defense, then engage a low-level monster and cast a spell repeatedly, knowing that the spell will consistently fail to inflict damage.
The primary advantage of this technique lies in its AFK (away from keyboard) nature, enabling players to train skills while undertaking other activities. Historically, it provided an accessible means for leveling up magic, defence, or hitpoints for players who may not have had the time or resources for more active training methods. This facilitated account progression and prepared characters for more challenging content.