Graviele
Perhaps it would be interesting for Harry to study (try to combine) Muggle science with his magical spells, thus creating even more powerful spells, an example: Instead of transfiguring a pole into a spear to k#ll a single Death Eater (if Harry had any idea of chemistry) it would be better to transfigure the wooden pole into sawdust and throw it towards them and fire a spark to blow them all up at the same time (logically the pole would not produces enough sawdust to blow up Harry and only what is close to the diners) Thanks for the chapter