Small Gem Collection

Here is another installment of exTRAPaganza, our Thursday over-the-top trap series. 

Several small gems are stored here on shelves. The gems have been enchanted to enlarge if taken outside.

If a gem is taken outside it becomes very large and heavy. The target carrying the gem must make a hard Dexterity saving throw or take heavy bludgeoning damage. The gem then teleports back to the shelf.