Sky Scourge Invicil is a very unique card, in that it's both an Imperial Order and Royal Decree on legs.
This deck mainly focuses on playing it as an Imperial Order, with most of the deck being dedicated to interactive traps, LIGHT Fairies that can special summon themselves for free (all the Runick spells are both removal and free LIGHT Fairies which is really nice), and one card combos that translate into big threats without requiring us to activate any spell cards (Tour Guide into Sangan is a 1 card Verte for DPE that searches you a handtrap; Tour Guide into Eccentrick is a 1 card Verte for DPE that puts a light and a dark in the GY for BLS; Trickstar Candina into Lilybell; Dark Contract with the Gate gets you Vice Requiem into Machinex with the ability to pop a card on the field before going into Seven Sins then Zeus; the list goes on). It may look like there are a lot of spells for a deck dedicated to turning them off, but 8 of these are 1 card starters to put a LIGHT Fairy on the board without normal summoning, Fusion Destiny is going to be (hopefully) activated from deck with Verte, which circumvent's Invicil's effect, and Pot of Greed/Graceful Charity are too good as consistency boosters to not include.
Invicil also has some unique strengths as a Deckmaster for Domain format, in that she provides access to EARTH, DARK, and LIGHT (arguably the three best attributes in the game), as well as Fairy and Fiend types, which both provide a number of useful generic cards like the Knightmare link monsters and the Runick package.
Domain is a 60 card singleton format in which your deck must be themed around a single monster card, the "Deck Master". Join the Domain Format discord server and take a look at the rules if you're interested: https://discord.gg/GxXHC4qCYM