Place it at the turning point of a strategy edit, after Enemy Spotted sets up the threat and before Okay Let's Go carries the action forward, so the switch becomes the centre of the scene.
Über diesen Sound
This short clip is the monk's single shouted 'Wololo' from Age of Empires II, lasting just over a second and delivered in a deep, chant-like voice. It feels playful and triumphant, like a sudden change of allegiance in the middle of a battle, and it works as an instant joke for anyone who recognises the game's famous conversion sound.