I am new as DM running my fourth session playing D&D 5e.
I have five experienced players who sometimes use logic that seems suspicious.
One of my players is a wizard. They cast Detect Magic as a ritual to search for magical items, barriers, or a person who has magic.
I don't have a problem with them walking while casting detect magic as a ritual, but the problem is about the size of the area.
The party thinks they can scan the area during their ritual while walking with a 30 feet radius while casting.
So in 10 minutes, the wizard can scan the area using detect magic.
Is that possible? It feels broken on some level.
Best Answer
Your players misunderstand how rituals work.
Casting a ritual adds a time cost of ten additional minutes to the casting time. So casting Detect Magic this way takes one action and ten minutes before they gain the benefit of the effect.
Detect Magic has a regular duration of ten minutes, but your players need to cast the spell first before they can use it - they can either do so by using a spell slot or spending the additional time cost of the ritual. Rituals:
For more information read the section about Casting Time.
Also note that Detect Magic is a spell that requires concentration, so the wizard needs to maintain concentration while scouting out the area.
Also note that the penetrative magic detection of Detect Magic is restricted by materials:
So while the way the players used Detect Magic to scan an area within 10 minutes with a 30 feet radius is correct, they disregarded the cost to ritual casting - and there are additional things that you have to consider when they use Detect Magic like materials blocking off vision, concentration, and time, or spell slot cost - all of which are limited resources in dangerous situations.