Hearthpwn

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Mulligan:

always keep: Acidic Swamp Ooze (it helps against aggro and warlocks, you can also just play this for tempo)

vs aggro: Zap!, Stormforged Axe, Healing Rain, Hot Spring Guardian, Lightning Storm

vs control: Mana Tide Totem, Storm Chaser, Stonehill Defender

against rogue or hunter keep: Earth Shock (silence their deathrattle minion)

when you have good mana curve against control keep: Eureka! and Giant Mastodon or Sleepy Dragon

Upgrades:

Bloodmage Thalnos - Card Draw and it synergies with all burn spells

Doomsayer - a really cheap and great tool to stop the early aggression. If you are a new player that want to become a control master you should craft it.

Gluttonous Ooze - not only you can destroy a weapon but you also gain armor

Lesser Saphire Spellstone - get few copies of big minions that you will summon. Works great with Charged Devilsaur because you can hit face. 

Charged Devilsaur - you can kill a minion right away or go face when this will be summoned by Eureka!

Hagatha the Witch - we do not play a lot of minions but it can generate a little bit of value anyway and it's a board clear that also provides armor.

The Lich King, Ysera or any other big minion - generates a lot of late game value and it's a great target for Eureka!

Cards That might be included:

Beakered Lightning - when odd paladin is your worst nighmare you can kill most of their 1/1 with it.

Earth Elemental - really interesting minion. Might be played with Eureka! or when you struggle against aggro just play it on curve for taunt

Snowfury Giant - there are a lot of overload cards in this deck but imo it's not good enough with Eureka!

Cairne Bloodhoof - hard to kill.

Intersting ideas:

You can include Far Sight but at the same time it makes more sense cut cheap spells.

Electra Stormsurge - there are cool spells that you can combine with it (ekhm ... Eureka!)

Witchwood Grizzly - good against aggro and with Eureka!

Skulking Geist - counters a lot of things in this meta but be careful about Earth Shock because it might be destroyed (you can also just remove it from your deck)

Malygos - works great with all burn spells but you should probably include sth that can go face. (Lightning Bolt, Frost Shock)

Strategy:

vs aggro: try to remove stuff that they will play. You should have enough removal and healing. One or two AoE board clears should be enough. Later just play Eureka! and you will have a big minion with taunt for defense. It's important to not let them overwhelm you with aggression. Zap! and Stormforged Axe can help you in killing all early threats.

vs control: this is a little bit more tricky because you need enough threats. Pick the biggest minion from Stonehill Defender and try to play Eureka! ASAP. Removal might be only helpful to keep your minions alive. Summon big boiiiis and apply preassure.

Full Deck:

Full Deck Code:

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