Anfey did not relax because he was able to avoid the bone cage. Instead, he became more alert. The bone cage was only an intermediate spell, and the hidden mages could use it over and over again if they wanted to. He avoided this one, but it did not mean he could avoid the next one.
Sometimes the Heart of Nature would beat along with his heartbeat, but now the situation was reversed. Normally, tense movements would cause his heartbeat increase, but under the influence of the Heart of Nature, his heartbeat hardly changed.
Anfey felt another wave of familiar magical surges in the distance. He recognized the surge of bone spears, and there were at least two different surges. Anfey frowned, then saw two bone spears rip through the air and fly towards him at a breakneck speed. Anfey took a deep breath and dashed forward, gripping his blade in his hand. He took a few steps forward and leapt into the air.