"Polite Curtain Call: Even the most thrilling play must come to an end. When you bow, all the audience must stand and applaud."
"SUFFIX RECOGNITION REWARD: Little Prophetic Faction experience, little Magic Power."
"Limited Suffix Privilege: You may trigger 'Polite Curtain Call' once."
When Ash and his companions figured out the third word suffix, they knew this was the key to clearing the level.
If a Mage had known "Polite Curtain Call" in advance and bowed to the Beastman Mage and Mist Ghost Dragon, the latter would have become applauding spectators, naturally leaving their roles as performers.
Even so, a Mage must possess intangible attack methods to deal with these enemies, such as Wind Skill, Sound Technique, Spiritual Shock, and aging over time—however, all these were relatively niche factions as intangibles are harder to master than tangibles.