Hero: Jericho Spellbane

Allies (20):
4x Aldmor Interceptor
4x Darklight Apprentice
4x Fleet-footed Messenger
4x Sabreen, Hand of Unaxio
4x Viska, The Scarlet Blade

Abilities (8):
4x Focused Prayer
4x Tidal Wave

Items (11):
4x Glass Chalice of Knowing
3x Wizent's Staff
4x The King's Pride

= 40 cards

This is a slight tweak from standard haste priest build with a better draw. I will explain in detail.

Why Jericho? You would like to save your SE on draw engine mostly and not for healing, so the heal from Zhanna is irrelevant.

The draw ability is good with Chalice and Staff, and the loss of SE is compensate through Darklight Apprentice. Aldmor Interceptor provides an extra dump for SE and as a haster.

Too much Viska and TKP? This deck is build around 2 elements: draw and consistency. Viska and TKP are your win coin and having extra copies means you will not be running out of steam.