Deadweight

The target object's weight is greatly increased. Any creature holding the object must succeed on a Strength saving throw or drop it. A creature which doesn't drop the object has disadvantage on attack

Level
2
School
Transmutation
Casting time
1 action
Range
touch
Components
V, S
Duration
Up to 1 minute
Classes
Artificer, Druid, Herald, Sorcerer, Wizard
Concentration
Yes

The target object's weight is greatly increased. Any creature holding the object must succeed on a Strength saving throw or drop it. A creature which doesn't drop the object has disadvantage on attack rolls until the start of your next turn as it figures out the object's new balance.

Creatures that attempt to push, drag, or lift the object must succeed on a Strength check against your spell save DC to do so.

Source and licence

From Level Up: Advanced 5e (A5E SRD).

Licence: SRD (CC BY 4.0).

Every licence notice Tavern Bag relies on.