Permafrost
x2
2
Kothon, the Far-Watcher
x4
2
Lightning Storm
x3
2
Protect
x2
2
Strategize
x4
2
Vanquish
x2
3
Knight-Chancellor Siraf
x4
3
Stand Together
x2
3
Unseen Commando
x3
3
Valkyrie Enforcer
x4
4
Auric Runehammer
x2
4
Copperhall Elite
x2
4
Sandstorm Titan
x4
4
Throne Warden
x3
5
Jotun Feast-Caller
x2
6
Mystic Ascendant
x4
6
Scouting Party
x2
7
Eilyn, Clan Mother
x1
Justice Sigil
x3
Primal Sigil
x3
Time Sigil
x3
Combrei Banner
x2
Crest of Wisdom
x4
Hooru Banner
x2
Seat of Order
x4
Seat of Progress
x4
View Deck on Shiftstoned
It seems to me that this is halfway an aggressive unseen commando deck which is indicated by crownwatch paladin, copperhall elite and unseen commando itsself. yet there are only 2 copys of copperhall elite and 3 copys of unseen commando.
jotun feast-caller is also part of the aggressive approach, yet you have no way to force it through because the other "half" of your card choices are more passive. on fest-caller specifically the decision of eilyn's choice vs vanquish makes it much harder to push it through.
throne warden and mystic ascendant also struggle with following up on your aggressive start, because they don't offer great pressure. mystic ascendant is particularly good at pulling ahead in equal boardstates and putting a clock on boardstalls, but i think with the aggressive start you have you shouldn't let your opponent equalize and boardstalls should occur very rarely because of your high count of flying units (including kothon).
To sum it all up: It seems to me that you haven't made up your mind on which game plan you want to execute, which is actually the main trait of a midrange deck. It plays the control role vs aggro decks and takes the aggressor role vs control decks, but in order to successfully execute that gameplan you need to fall back on very flexible cards. I don't think that cards like crownwatch paladin, throne warden, eilyn's choice are flexible enough to effectively support both roles.