Board Thread:Off Topic/@comment-24534644-20170213012304/@comment-26397825-20170404021348

You did notice the 'will increase with practise', right? It starts at 1m2, but as the user grows stronger they can affect more area.
 * General limitations: Time limit of 5 minutes, will increase with practise. Can only affect up to 1m square of materials, will increase with practise. 

And by unbreakable, I basically mean that the object/surface won't lose it's shape or be scratched or shattered. So hitting a glass with a hammer will result it the hammer bouncing off it while the glass rolls/bounces away. Heating up a glass until it's motlen will have it retain the shape but it'll be too hot to pick up, and if it's still hot when the time limit is up the glass will deform and melt.