Streak of white
From the way that the ocean of blood had behaved, always being pushed away from the light, Nero assumed that the light was physically pushing it away. When he saw the daisy bend, he felt that assumption reconfirmed. Yet when he pressed the light onto the daisy, and finally saw the silver light shine on its body, he was proven wrong.
The light did not crush the plant. Instead, much like with the plants earlier, smoke started to emerge from the plant. Only, it was not a thin, easily dismissable wisp, but a thick, black torrent.
Nero immediately jumped back, completely unwilling to be touched by the thick black smoke, though some inevitably touched him regardless. Nothing happened. The smoke was harmless, and disappeared into the wind as if it had never existed to begin with. The plant had also returned to its upright position, and at a glance looked perfectly normal. But on a closer look, Nero noticed that the petals looked a shade lighter.