The golden grade spell of space element, Space Shift, would let the caster directly change position with an objection within the range of the caster's vision.
Cyrus used an eye spell first to see through the massive igloo and then used the space shift to switch position with a pebble inside the igloo.
Now, he was inside the igloo and didn't have to go through those annoying guards outside. Before, he was also concerned with his limited amount of Qi and refrained from using rare element spells like the space element, but now he can spare some Qi for such spells if they can save him some trouble.
Moreover, the rarer the element was, the more Qi it would need to utilize, and if someone was not practicing that element or had no affinity with it, not to mention the difficulty of comprehending that element to learn the spells of that element.