This is my version of this deck in this game's format.
If you don't know the drill, the main objective is to summon Crystron Halfquifibrax and a White Stone of Legend as soon as possible in order to have material to summon Guardragon Elpy and Guardragon Pisty to each of Halq's arrows, Special Summon Starliege Seyfert and use it to get Nebula Dragon or other level 8 dragon.
Then, you Link Summon Saryuja Skull Dread in order to dig through your deck and get the combo pieces to get your final board, which must have at least: Hieratic Seal of Heavenly Spheres (1 interruption), Number 38 (1 Spell Negate) and Blue-Eyes Spirit Dragon (Pendulum Prevention, if relevant, an 1 GY Negate).
Since this is an early format for Dragon link, you can sometimes get away with some shenanigans, like summoning Photon Lord with Galaxy-Eyes Photon Dragon as material, in order to negate AND destroy whatever monster you negate. In real TCG you should remove that gimmicky stuff and change them with 3 Chaos Space, substitute CED with Chaos Ruler, the Dragon of Armaggeddon, add 1 or two Noctovision Dragon, remove Infinite Impermanence and add a couple more hand traps.
Again, keep in mind that this deck is only meant to be played in this game, the format, card pool, banlist and playing mindset is very different from that of TCG, even compared to the format closest to this game (March 2020 pre-ETCO).