As you can probably tell from the curve, this deck is FAST, and you should basically always be playing to race. You can win trades with Matryoshka, but even more easily you can go around with Hacker's Intuition or Ved'ma Skyranger, over with Overkill on Leshy Greene or buffed minions, or even just burn with Mothmara and House Elf.
While Detained will be useful for trades, the real prize is being able to use Deported to keep on racing, as you hopefully won't give them much of a chance to replay their defensive minions, and you will always have the change to go around or over the top later. More complex late game can include Shroud of the Pit to bring back any of your pinging one-drops or Ved'ma Skyranger to sneak in final damage (especially aided by matryoshka) but honestly, you should always be racing and hopefully not see much late game.
Keeping a healthy flow of spells, both to draw cards and power Spellflux Cauldron, is probably more important than keeping an escalating curve, as you want wide strategies, and don't be afraid to use an Overkill early to get that ball rolling, especially if it sneaks in excess damage via Mothmara and Spellflux Cauldron