<Snipped quote by Path>
*A red static flashes across my eyes*
Explanation: The spell remains locked in the activation phase, so just enough magic remains to maintain the remote cast. By the time the magic travels around the length of one inner circle, it has faded at the beginning and must be reigniteed by the remote cast.
*Taps my temple and the static effect fades*
In other words, the spell spins in circles trying to fully activate. And whenever we want to cast a spell at the beacon, we just have to shove it through the remote casting channel, which briefly overwrites the beacon's magic with the spell we wanna cast. And if we want to gate, we just have to give it enough magic to complete the spell.
Interesting.
*looks at it while crouching*
What if the dungeon hinders your magic that connects you to this circle?