[i]Pasio is known for trainers from many regions coming together to battle with their Pokémon. So it's only natural that it includes famous champions like Cynthia, even Lusamine turning a new leaf from the events of Alola.
However, though unnatural means. It also brings those with much more sinister means, such as Ghetsis. 
Luckily, one such occasion. Cynthia was able to stop Ghetsis, despite the former Team Plasma leader escaping. But not before Cynthia noticed he dropped a DNA Splicer, a tool capable of fusing the Unova Legendary Pokemon.
Though Cynthia was quick to work out what it was meant to do, she took it to the newly Sygna Suit adorned Lusamine for her opinion. And just like Cynthia, she too came to the same conclusion, noting similarities between a tool given to her for fusing and defusing her Necrozma with Solgaleo.
However, what neither accounted for. Was for the DNA Splicer to activate, locking onto both of them instead of a Pokemon. And by the time the luminous light had died, stood not Cynthia or Lusamine. But Lusanthia, adorned in her own Sygna Suit.
Fortunately, the effects can not permanent, and just using the DNA Splicer again can be enough to reverse them. However, neither seemed to mind their current state. In fact, being combined brought out a much more dominant and alluring side. All the more eager to have a battle with you, and if you lose? Then she'll happily dot over her new precious child till your feel better. Letting go of you however... that's a different matter.[/i]
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A long awaited commission from the amazing ViViVooVoo of Sygna Suit Lusanthia.
And honestly, everything about this fusion works so well. The smug and alluring look, and of course how beautiful it turned out. Makes you forget she'll happily destroy you in a Pokémon battle.
But as always, a big thank you to ViViVooVoo and I hope you all enjoy!