Listen to this dude Shalai. He knows what he's talking about.
Okay, so here's the deal with this deck: it's all about the fliers, and not about control. The control is in here to keep your opponent off your fliers. Jace is in here to untap your fliers and draw more fliers.
Draw spells are in here to draw fliers, and freakin' Teferi is in here to draw fliers. You have a little removal in Ixalan's Binding, you have a little stall with Revitalize and River's Rebuke.
Shalai protects everyone, Siren Stormtamer protects Shalai, you protect Siren Stormtamer by not attacking against fliers with it, not blocking with it, and using Negates as needed to protect it. ALWAYS KEEP ONE ISLAND OPEN FOR THE STORMTAMER IF IT IS OUT.
Sphinxes are great, you want them in your opening hand. Mulligan into one if you have to, that's how good Scry 3 Turn 1 is.
Do all of the above, and Pteramander should take care of everything itself. You'll have plenty of the right cards in your graveyard and plenty of land on the board to Adapt him by the time it matters. Hang back with him after the first couple turns if the opponent has an answer for fliers.
Mission Briefing is in here to get Counterspells. Don't play it for any other reason, trust me.
Angel of Grace is your life-saver, twice-over. She'll block a creature and leave you at at least 1 at the same time, and when she's in your graveyard your next main phase, you've got the mana to put yourself back at 10.
Sideboard is a bit weird, but check it: side in Mountain, Chromatic Lantern, Ionize, Niv-Mizzet, Unwind, Mission Briefing, and Syncopate against control. Side out a Plains and ALL the creatures EXCEPT 2 Siren Stormtamers and side out the 2 Dive Downs. You now have a Jeskai control deck that draws into Teferi and Niv. Congratulations.
