Its secret weapon is actually its first attack, Release Rage , which costs 2 Colorless Energy and does 50 damage times the number of Tatsugiri in your discard pile
Marrow-Gnawer can grow your rat army and give them fear to make them essentially unblockable if your opponents are not playing black or do not control an artifact creature
Bloodmoon Ursaluna exs Special Illustration Rare is a much more humourous take on the usually fearsome Ursaluna
You can also just keep them as-is and have a purely Final Fantasy experience if you want
I covered the most valuable normal, non-foil cards in the set

Necron Dynasties View on Archidekt Commander (1) 1 Szarekh, the Silent KingSzarekh, the Silent King Creatures (29) 1 Anrakyr the TravellerAnrakyr the Traveller 1 Canoptek Scarab SwarmCanoptek Scarab Swarm 1 Canoptek SpyderCanoptek Spyder 1 Canoptek Tomb SentinelCanoptek Tomb Sentinel 1 Canoptek WraithCanoptek Wraith 1 ChronomancerChronomancer 1 CryptekCryptek 1 CryptothrallCryptothrall 1 Flayed OneFlayed One 1 Hexmark DestroyerHexmark Destroyer 1 Illuminor SzerasIlluminor Szeras 1 Imotekh the StormlordImotekh the Stormlord 1 Lokhust Heavy DestroyerLokhust Heavy Destroyer 1 LychguardLychguard 1 Necron DeathmarkNecron Deathmark 1 Necron OverlordNecron Overlord 1 PlasmancerPlasmancer 1 PsychomancerPsychomancer 1 Royal WardenRoyal Warden 1 Sautekh ImmortalSautekh Immortal 1 Shard of the NightbringerShard of the Nightbringer 1 Shard of the Void DragonShard of the Void Dragon 1 Skorpekh DestroyerSkorpekh Destroyer 1 Skorpekh LordSkorpekh Lord 1 TechnomancerTechnomancer 1 Tomb BladeTomb Blade 1 Trazyn the InfiniteTrazyn the Infinite 1 Triarch PraetorianTriarch Praetorian 1 Triarch StalkerTriarch Stalker Artifacts (21) 1 Arcane SignetArcane Signet 1 Caged SunCaged Sun 1 Commander's SphereCommander's Sphere 1 Convergence of DominionConvergence of Dominion 1 Cranial PlatingCranial Plating 1 Endless AtlasEndless Atlas 1 Ghost ArkGhost Ark 1 Gilded LotusGilded Lotus 1 Hedron ArchiveHedron Archive 1 Mask of MemoryMask of Memory 1 Mind StoneMind Stone 1 Mystic ForgeMystic Forge 1 Necron MonolithNecron Monolith 1 Night ScytheNight Scythe 1 Resurrection OrbResurrection Orb 1 Sceptre of Eternal GlorySceptre of Eternal Glory 1 Sculpting SteelSculpting Steel 1 Sol RingSol Ring 1 Thought VesselThought Vessel 1 Unstable ObeliskUnstable Obelisk 1 Wayfarer's BaubleWayfarer's Bauble Enchantments (3) 1 BiotransferenceBiotransference 1 Out of the TombsOut of the Tombs 1 The War in HeavenThe War in Heaven Instants (3) 1 DarknessDarkness 1 DefileDefile 1 Go for the ThroatGo for the Throat Sorceries (6) 1 Beacon of UnrestBeacon of Unrest 1 Dread ReturnDread Return 1 Living DeathLiving Death 1 MutilateMutilate 1 Their Name Is DeathTheir Name Is Death 1 Their Number Is LegionTheir Number Is Legion Lands (37) 1 Barren MoorBarren Moor 1 Desert of the GlorifiedDesert of the Glorified 1 Myriad LandscapeMyriad Landscape 1 Polluted MirePolluted Mire 1 Reliquary TowerReliquary Tower 30 SwampSwamp 1 Tomb FortressTomb Fortress 1 Vault of WhispersVault of Whispers Ancient Technology I think the deck is already well constructed for the most part, but there are still plenty of improvements to make while maintaining the feel of the precon
