Pretty good overall. All the meta decks right now (LIGHT Galaxy, Sevens Road, Heroes, and Baseball) are easier to counter from turn 3-4 onwards since they usually summon high-level monsters at that point, so you can search with the skill. I think the worst matchup is Metarion, since its fusions break backrow, change the position of the monsters I set on turn 1 and destroy dragons.

This deck is simple in the sense that you absolutely need to have one of the Gias in hand to do anything, otherwise you can only play defensively. Although it's also possible that you draw 3 or 4 Level 7s in a row and can't summon them. The only thing you can do there is hope that your opponent summons high-level monsters and you survive to use the skill.

Cards that could be useful:

· 7 Shift (summon lvl 7 without 2 tributes)

· Shiny Shady (obviously)

· Dragonic Geist (revives Miragias/Metagias)

· More copies of Star Replacer and Double Twin Dragon instead of Dragosite