I like it +1 for me take a look at my take on control and let me know what you think.

You thought of using Jace, the Living Guildpact instead of steam augury? You get more consistent draw and can still build up a graveyard. Not to mention he can keep creatures at bay in the turns before you can get Narset out. And maybe put Thassa, God of the Sea in too? She can make Narset unblockable and give some choice in what spells Narset will cast. Im using both cards in my build and they've worked out pretty consistently.

I would appreciate your input on my Jeskai Control deck. Please and thank you. It won't let me link it for some reason, but if you go to my page, and look at "Because Murica, That's Why", it's that deck. I like you deck and I think we have slightly different styles, but I still would like some input. Now I can actually make this entire deck you have, I have all the cards, and if my version doesn't work out, it might be an option, but I want to know how this is working out for you from either playtesting or actually playing with it. Thanks.

You should update this deck for standard. Rattleclaw Mystic can still throw out a turn 4 Narset and with the ease of using 4-5 colors in standard at the moment you can add Torrent Elemental as it's currently the only creature that can be bought back from exile. Stasis Snare is also her new best friend and even Fiery Impulse is an easy replacement for Lightning Strike. As for combos Jeskai Charm + Howl of the Horde can still easily win a game and Howl can even net you a fresh hand combined with Dig Through Time. If you add black you can also Necromantic Summons Narset after using Tormenting Voice to dump her.

Never give up on the free spells!!!

Ps. Also Hedron Archive

I'll see what I can come up with ;)