He is riding with a dozen guards and then suddenly they are not around him. Not just an illusion, either - osanwë doesn't reach them - either instantly dead, all of them, or he's been moved - and the sky's changed, so it could be that -
- he dismounts. He doesn't draw a weapon - if this is a ploy of the Enemy then it's over, he lost, there's no point.
And he reaches out for every mind in range.