The Cushioning Charm
The Cushioning Charm,or "Cushinnoo" makes the target or creates a softening effect on the target. This spell is maximally used on broomsticks for smoother flying.The wand movement is the simple flick, but unlike most flicked spells, allows some room for flourishes, making it not a good practice spell for First Years. It is, actually one of the toughest spells to master for the average First Year student.
If done correctly, the broom should emit a light glow as the spell settles and then the glow shall disappear. This spell stays in action for as long as the caster wills.