In D&D 3.5 and Pathfinder 1, Detect Magic was a cantrip. That meant it was possible to cast it a lot / infinite number of times per day, and get useful information in 1 to 3 rounds.
In 5e, it is a 1st level spell, but a ritual. It means that it still can be used quickly, or can be used indefinite number of times per day, but not both.
Given that worlds I DM are usually magic rich, what changes to the gameplay should I expect? How can I utilize this change in Detect Magic for the benefit of the story?
I'm not looking for an essay, just for main points that came with your experience in DMing 5e adventures with significant magic to be detected, or to stay hidden.
For future reference, in 3.5 Detect Magic uses were not always infinite, but they were much more accessible for three reasons:
- they didn't compete for spell slots with Magic Missile and other non-cantrip spells, and there were more cantrip slots to begin with.
- if needed, they still could use 1st level spell slots and
- Magic Sensitive Reserve Feat (Complete Mage, p. 44) allowed you to effectively have it always on even without casting it at all.