Change your preferences here.
Deals damage and has a 10% chance to burn the target.
Ember is a rather useless move competitively: it sits at 40 Base Power, which means there is no reason it use it over Flamethrower or Fire Blast, both of which also have a 10% chance to burn the target and are more powerful. Most, if not all, Pokemon that get Ember also have Flamethrower or Fire Blast.
Flamethrower is a more powerful alternative.
Fire Blast is a less accurate but more powerful alternative.
Lava Plume is a more powerful alternative with a higher change to burn.