I tried a few Classic decks without custom configs.
I don´t have Leeroy anymore so i just replaced it with Reckless Rocketeer ;)
### ClassicTempo
# Class: Mage
# Format: Classic
#
# 2x (1) Arcane Missiles
# 2x (1) Argent Squire
# 2x (1) Leper Gnome
# 2x (1) Mana Wyrm
# 1x (1) Mirror Image
# 2x (2) Faerie Dragon
# 2x (2) Frostbolt
# 2x (2) Knife Juggler
# 2x (2) Sorcerer's Apprentice
# 2x (3) Arcane Golem
# 2x (3) Arcane Intellect
# 2x (3) Harvest Golem
# 2x (4) Fireball
# 2x (4) Water Elemental
# 2x (5) Azure Drake
# 1x (6) Reckless Rocketeer
#
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#
# To use this deck, copy it to your clipboard and create a new deck in Hearthstone
W-L: 39-35
Deck isn´t the best, but bot did play it quite well
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### ClassicDruid
# Class: Druid
# Format: Classic
#
# 2x (0) Innervate
# 2x (1) Argent Squire
# 1x (2) Bloodmage Thalnos
# 2x (2) Loot Hoarder
# 2x (2) Power of the Wild
# 2x (2) Wrath
# 1x (3) Big Game Hunter
# 2x (3) Harvest Golem
# 2x (3) Savage Roar
# 2x (4) Keeper of the Grove
# 2x (4) Swipe
# 2x (4) Violet Teacher
# 2x (5) Azure Drake
# 2x (5) Druid of the Claw
# 2x (6) Force of Nature
# 2x (7) Ancient of Lore
#
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#
# To use this deck, copy it to your clipboard and create a new deck in Hearthstone
W-L: 36-35
One of the best decks, but bot misplays Force of Nature/Savage Roar-combo - needs custom config
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### ClassicShaman
# Class: Shaman
# Format: Classic
#
# 2x (1) Argent Squire
# 2x (1) Earth Shock
# 2x (1) Leper Gnome
# 2x (1) Lightning Bolt
# 2x (1) Rockbiter Weapon
# 1x (2) Bloodmage Thalnos
# 2x (2) Flametongue Totem
# 2x (2) Loot Hoarder
# 1x (2) Windfury
# 2x (3) Feral Spirit
# 2x (3) Harvest Golem
# 2x (3) Hex
# 2x (3) Lava Burst
# 2x (3) Lightning Storm
# 2x (5) Azure Drake
# 1x (5) Doomhammer
# 1x (8) Al'Akir the Windlord
#
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#
# To use this deck, copy it to your clipboard and create a new deck in Hearthstone
W-L: 77-83
Bot plays decent, but Shaman is weak in Classic mode
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### ClassicFace
# Class: Hunter
# Format: Classic
#
# 1x (0) Hunter's Mark
# 2x (1) Abusive Sergeant
# 2x (1) Argent Squire
# 2x (1) Leper Gnome
# 2x (1) Tracking
# 2x (1) Worgen Infiltrator
# 2x (2) Explosive Trap
# 1x (2) Ironbeak Owl
# 2x (2) Knife Juggler
# 1x (2) Snake Trap
# 2x (3) Animal Companion
# 2x (3) Arcane Golem
# 2x (3) Eaglehorn Bow
# 2x (3) Kill Command
# 2x (3) Unleash the Hounds
# 2x (3) Wolfrider
# 1x (6) Reckless Rocketeer
#
AAEDAR8EhZYEuJYEgqEE06IEDaGWBNGWBPiWBLGXBIGhBLKhBLShBL2hBNGhBM2iBM+iBKKjBMOjBAA=
#
# To use this deck, copy it to your clipboard and create a new deck in Hearthstone
W-L: 168-158
Bot plays fine, deck isn´t the strongest but win or lose, games are fast :)
Needs custom config for conceding when games are lost to stop wasting time against control decks
<
### ClassicZoo
# Class: Warlock
# Format: Classic
#
# 2x (0) Soulfire
# 2x (1) Abusive Sergeant
# 2x (1) Argent Squire
# 2x (1) Flame Imp
# 2x (1) Leper Gnome
# 2x (1) Voidwalker
# 2x (1) Young Priestess
# 2x (2) Amani Berserker
# 2x (2) Dire Wolf Alpha
# 2x (2) Knife Juggler
# 2x (3) Harvest Golem
# 2x (3) Scarlet Crusader
# 2x (3) Shattered Sun Cleric
# 2x (4) Defender of Argus
# 2x (5) Doomguard
#
AAEDAeL5AwAP+5UE1ZYE7ZYEgaEErqEEsqEEuaEEvaEE06EE7qEEnaIEo6IEu6IE1KIEw6MEAA==
#
# To use this deck, copy it to your clipboard and create a new deck in Hearthstone
W-L: 17-18
Good deck but bot has problems with discard cards, so i stopped playing it
Needs custom config
<
AggroPaladin
### AggroClassic
# Class: Paladin
# Format: Classic
#
# 2x (1) Abusive Sergeant
# 2x (1) Argent Squire
# 2x (1) Blessing of Might
# 2x (1) Elven Archer
# 2x (1) Leper Gnome
# 2x (1) Worgen Infiltrator
# 2x (2) Argent Protector
# 2x (2) Equality
# 2x (2) Knife Juggler
# 2x (3) Divine Favor
# 2x (4) Blessing of Kings
# 2x (4) Consecration
# 1x (4) Hammer of Wrath
# 2x (4) Truesilver Champion
# 2x (6) Avenging Wrath
# 1x (6) Reckless Rocketeer
#
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#
# To use this deck, copy it to your clipboard and create a new deck in Hearthstone
W-L: 96-65
The best deck so far. Does not look that strong, so maybe bot just got lucky ^^
<
Decks i didn´t try:
Control Warrior - One of the better decks but i don´t have all the cards
Rogue - Very good deck if you play it right. Because it´s a combo deck i didn´t even try without custom config
Priest - worst class in Classic