Blue Runechalk

As an action, you can use this chalk to draw a simple symbol. Only one of the symbols can be active at a time. You can draw up to 20 symbols
with this chalk before it is completely used up.
Square: Casts Alarm, the 20ft cube is centered on the symbol. Circle: Casts Purify Food and Drink, centered on the symbol. Triangle: Casts Mending on the item you drew the symbol on. Cross: Instantly locks a mechanical lock on a door or a chest once.