Last year's release of Pokémon Sun/Moon added a new mechanic called Z-Moves. Z-Moves are a special type of move that is extra powerful, but can only be used once per battle. Sometimes, a Z-Move is just an upgraded status move. For instance, the very unhelpful move Splash, which normally doesn't do anything at all, can raise a Pokémon's attack by three stages when powered into a Z-Move. This is a powerful status move. Another powerful status move is Eevee's signature Z-Move Extreme Evoboost. This status move can raise all of the user's stats by two stages. The unfortanate downside to these powerful Z-Moves is that they do no damage. By contrast most damage dealing Z-Moves don't have any secondary effects.
There are some exceptions such as Ash Hat Pikachu's 10,000,000 Volt Thunderbolt, Alolan Raichu's Stoked Sparksurfer and Mew's Genisis Supernova. The secondary effects that these moves posess are all fairly resonable. However, there is one newly announced Z-Move that will blow everything else out of the water. This Z-Move is called Clangorous Soulblaze and it is the Pokémon Kommo-o's signature Z-Move.
This extraordinary new signature Z-Move turns Kommo-o's Clanging Scales in to Clangorous Soulblaze through the use of Kommonium Z. It's secondary effect raises all of the user's stats by one stage and targets all opponents on the field. This makes the new move the only current Z-Move that can target more than one opponent at once. It is currently unknown how much damage the move does to each target. One can speculate, however, that it does very high damage. Kommo-o transforming Clanging Scales into Devastating Drake with the Dragonium Z already does 185 base power. I'm guessing that the base power of Clangorous Soulblaze will be 205, since in most cases using a signature Z-Move is better than the standard Z-Move by 20 base power. I for one will be breeding a Kommo-o for my competitive team very soon.
Pokémon Ultra Sun/Ultra Moon will release November 17th.