So, I decided to try out Hearth Arena because I'm just terrible at Arena, and my picks just always seemed to be wrong. I never checked what I had always drafted, and just went with gut choices that didn't form a coherent decklist. So, this is from my first try with Hearth Arena, and even though I didn't do well, I figured I might as well share it and my other drafts so maybe I can get some feedback. This draft was done taking 100% of Hearth Arena's suggestions, I believe. In future drafts I think I deviate a little here and there from their suggestions, but this was my first go with it.


Warlock

Pick #1 - Injured Blademaster over Void Terror or Secretkeeper
Pick #2 - Dread Infernal over Dark Iron Dwarf or Flame Juggler
Pick #3 - Boneguard Lieutenant over Pit Fighter or Dragonhawk Rider
Pick #4 - Alarm-o-Bot over Emperor Cobra or Secretkeeper
Pick #5 - Bomb Lobber over Stampeding Kodo or Siphon Soul

Pick #6 - Shattered Sun Cleric over Power Overwhelming or Haunted Creeper
Pick #7 - Boneguard Lieutenant over Mechanical Yeti or Dread Corsair
Pick #8 - Puddlestomper over Demonfuse or Frostwolf Warlord
Pick #9 - Faerie Dragon over Cult Master or Boneguard Lieutenant
Pick #10 - Fist of Jaraxxus over Injured Kvaldir or Ancient Watcher

Pick #11 - Gadgetzan Jouster over Frigid Snobold or Wisp
Pick #12 - Fen Creeper over Core Hound or Evil Heckler
Pick #13 - Mistress of Pain over Argent Watchman or Doomguard
Pick #14 - Maiden of the Lake over Blood Imp or Soulfire
Pick #15 - Cogmaster over Drain Life or Voidcaller

Pick #16 - Summoning Portal over Acidic Swamp Ooze or Kvaldir Raider
Pick #17 - Gnomeregan Infantry over Mad Bomber or Gadgetzan Jouster
Pick #18 - Magma Rager over Tournament Medic or Darkbomb
Pick #19 - Summoning Portal over Voidcaller or Darkbomb
Pick #20 - Injured Kvaldir over Tiny Knight of Evil or Lil' Exorcist

Pick #21 - Thrallmar Farseer over Frost Elemental or Voodoo Doctor
Pick #22 - Kobold Geomancer over Haunted Creeper or Dalaran Mage
Pick #23 - Acolyte of Pain over Refreshment Vendor or Magma Rager
Pick #24 - Ironfur Grizzly over Wolfrider or Grimscale Oracle
Pick #25 - Lowly Squire over Dragonhawk Rider or Voidwalker

Pick #26 - Wrathguard over Silver Hand Regent or Lance Carrier
Pick #27 - Spider Tank over Flying Machine or Clockwork Gnome
Pick #28 - Scarlet Crusader over Ironfur Grizzly or Dragonhawk Rider
Pick #29 - Shadowflame over Mistress of Pain or Deathlord
Pick #30 - Defender of Argus over Felguard or Pint-Sized Summoner


Game one

Game two

Game three

Game four

Game five


Ended on 2 - 3

~SE++

#5, #10, #16, #17, #18, #19 and #20 seem really sketchy to me, and some I'm of the fence on.
I think it really wanted 3-drops, although I'd rather have raptor than a 1/4. I really don't know about Annoy-a-Tron and Summoning Portal. Is SP supposed to be good? All of the four options you were provided with were reasonable to good cards.