Kyros had jumped from one portal to the other. After sending the team out, he gave orders for the next stages of the plan and moved out.
The massive arrow was a subtle trick. It allowed the enemies to quickly move and follow a path that Kyros had already known.
During the accelerated time inside the Temple, Kyros studied the land's topography and began to plot where his trap would be prepared. Since Kyros knew the route of the enemy as they created a massive arrow pointing at the Temple's position, Kyros had moved in the position in advance and used his knowledge to create the teleportation circles around the place.
His mastery in magic as he studied the Celestial Code and followed the foundation of magic teachings taught by the Temple and derived by the Emberdons made Kyros a master spellcaster.
While he cannot create powerful attacks on a Champion level, he could cast complex spells such as teleportation.