Draconic Greed

You touch a treasure worth at least 100 gp, and imbue it with a draconic curse for the spell’s duration. The treasure can be a pile of coins, or a single object of equal value. While the treasure is cursed in this way, the next creature that touches it must make a Wisdom saving throw. You and creatures of your choice are immune to this spell. Creatures who are immune to being charmed automatically succeed on this saving throw. When a creature succeeds on its saving throw, the spell ends on the treasure. On a failed save, a creature is bound to the treasure through magical greed. It refuses to part with the treasure or to give it up under any circumstances. It attempts to stay as close to it as possible, and never willingly lets it be more than 100 feet from itself. The creature will violently defend the treasure if necessary to keep others from taking it.

A remove curse spell or similar magic ends the spell early. If an affected creature spends at least 1 hour with the treasure more than 100 feet away from it, it can reroll its saving throw against the spell, ending it on a success.

At Higher Levels. If you cast this spell using a spell slot of 5th level or higher, the duration is concentration, up to 8 hours. If you use a spell slot of 6th level or higher, the duration is 24 hours. If you use a spell slot of 7th level or higher, the duration is 10 days. If you use a spell slot of 8th level or higher, the spell lasts until it is dispelled. Using a spell slot of 6th level or higher grants a duration that doesn't require concentration.