Thermal expansion/shrinkage

You cause on an object you own and can grab to grow larger or smaller for unlimited time. If the target has some sort of conscience and is unwilling, it can make a Constitution saving throw. On a success, the spell has no effect. if the 

Expansion.  With gloves of leather ,drawing a circle with the flour on the target surface, the object's size and weight will increase twice its values making it bigger. This growth increases its size by one category-- from Medium to Large, for example. If there isn't enough room for the target to double its size, the object attains the maximum possible size in the space available. This spell also affects the temperature of the object it self, this increase the temperature making it hotter and almost unbereable to hold in naked hand, but it will not melt or affected by external temperatures. If the object is going to be used as a weapon, the object also has advantage on Strength checks and Strength saving throws on the begining of the spell. While these weapons are enlarged, the object's attacks deal 1d4 extra damage at the begging of the spell only using the increasing of the temperature as an advantage.

Reduce. With gloves of wool ,drawing a circle with the flour on the target surface, the object's size and weight will decrease twice its values making it smaller. This shrinking decreases its size by one category-- from Medium to Small, for example. This spell also affects the temperature of the object it self, this decrease the temperature making it colder, but i will not breake or be affected by external temperatures. Until the spell ends, the target also has disadvantage on Strength checks and Strength saving throws. The target's weapons also shrink to match its new size. While these weapons are reduced, the target's attacks with them deal 1d4 less damage (this can't reduce the damage below 1).