Ancient Tether (5e Spell)
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Closing your eyes you feel the astral ley lines flowing all around you. Opening your eyes your reach forward and touch an object or a creature and attach a ley line to the object. While this spell is active, you can always find your way back to mark by following the astral ley lines flowing from it to you.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the duration increases by 24 hours for every two slot levels above 2nd.