The board game has 17 monster decks. One of each mono color (5). Each dual color (10). And 2 dragon decks. The decks are inspired by the decks in the video game. But they need to be worse because the AI is good in the board game (you're playing against a friend).
Any player that isn't busy will use the monster deck against you. These decks were designed to use classic cards, and have a funny win con, where everyone knows what the deck is trying to do. Each deck is exactly 40 cards.
To determine which deck you face, roll a 6 sided die: You will face a deck of the color of the terrain you're traveling to. If you roll 6 it's that mono color. Otherwise it's the 2 color deck with the 2nd color as 1=white 2=blue 3=black 4=red 5=green.
Red Deck: Goblin Lord
Win Con 1: Lots of goblins
Removal: None
2 Mons's Goblin Raiders
2 Goblins of the Flarg
2 Goblin Artisans
2 Goblin Balloon Brigade
2 Goblin Digging Team
2 Goblin Polka Band
1 Goblin Rock Sled
2 Goblin Hero
2 Goblin King
2 Keldon Warlord
2 Goblin Caves
2 Goblin Shrine
2 Helm of Chatzuk
15 Mountain
Green Deck: Enchantress
Win Con 1: Rabit Wombat with enchantments
Win Con 2: Living Lands + lots of forests
Removal: Lure + Venom
16 Forest
4 Verduran Enchantress
4 Rabid Wombat
4 Web
4 Wild Growth
2 Llanowar Elves
2 Lure
2 Venom
1 Living Lands
1 Sylvan Library
Blue deck: Thought Invoker
Win Con 1: Psychic Venom + Tap the land.
Win Con 2: Leviathin.
Removal: Boomerang + Power Sink.
16 Island
1 Tolaria
4 Psychic Venom
4 Power Sink
2 Giant Tortoise
2 Wall of Air
2 Leviathan
2 Twiddle
2 Boomerang
2 Mana Short
2 Power Leak
1 Energy Flux
1 Icy Manipulator
Black deck: Witch
Win Con 1: Disk + Regenerate.
Win Con 2: Pestilence + Simulacrum.
Removal: Disk, Pestilence.
4 Pestilence
4 Drudge Skeletons
2 Nevinyrral's Disk
2 Wall of Bone
2 Diabolic Machine
2 Scavenging Ghoul
4 Simulacrum
2 Dark Ritual
2 Throne of Bone
16 Swamp
White Deck: Priestess
Win Con 1: Wall of Swords + Animate Wall.
Win Con 2: Kithkin + Blessing.
Removal: Disenchant.
4 Wall of Spears
4 Wall of Swords
4 Animate Wall
2 Benalish Hero
2 Amrou Kithkin
2 Blessing
2 Disenchant
2 Fortified Area
2 Visions
16 Plains
Red/Green Deck: Forest Dragon
Win Con 1: Ramp into Craw Wurm.
Win Con 2: Stream of Life then Hurricane.
Removal: Hurricane, Scavenger Folk.
10 Forest
6 Mountain
2 Scavenger Folk
2 Ali Baba
2 Dragon Engine
2 Ley Druid
2 Untamed Wilds
2 Mana Flare
4 Craw Wurm
2 Hurricane
3 Stream of Life
1 Ironroot Treefolk
2 Giant Spider
Red/Blue Deck: Elementalist
Win Con 1: Elementals
Removal: Siren's Call, Time Elemental
2 Apprentice Wizard
4 Earth Elemental
2 Fire Elemental
2 Giant Tortoise
7 Island
2 Jump
7 Mountain
2 Sindbad
2 Siren's Call
2 Sisters of the Flame
2 Time Elemental
2 Volcanic Island
2 Wall of Earth
2 Water Elemental
Red/Black Deck: Sedge Beast
Win Con 1: Sedge Troll
Win Con 2: Dingus Egg
Win Con 3: Murk Dwellers + Word of Binding
Removal: Spirit Shackle + Word of Binding
Edit: Replaced 2 Sedge Trolls with Stone Giants. Was too good.
8 Swamp
6 Mountain
2 Badlands
4 Blight
4 Stone Rain
2 Dingus Egg
2 Word of Binding
4 Spirit Shackle
4 Murk Dwellers
2 Sedge Troll
2 Stone Giant
Red/White Deck: Weaponsmith
This deck isn't in the video game.
Win Con 1: Orcish Artillery + Samite Healer
Win Con 2: Coral Helm + Archeologist
Removal: Orcish Artillery
4 Samite Healer
4 Orcish Artillery
4 Ornithopter
2 Argivian Archaeologist
2 Coral Helm
4 Dwarven Weaponsmith
2 Fountain of Youth
2 Soul Net
6 Mountain
6 Plains
4 Plateau
Green/Blue Deck: Fungus Master
Win Con 1: Fungusaur + Prodigal
Win Con 2: Prodigal + Instill Energy
Removal: Pinging, Sandstorm
9 Forest
7 Island
4 Fungusaur
4 Prodigal Sorcerer
2 Psionic Entity
2 Rod of Ruin
2 Birds of Paradise
2 Wall of Wood
2 Web
2 Instill Energy
2 Regeneration
2 Sandstorm
Green/Black Deck: Centaur Shaman
Win Con 1: Upkeep Damage
Removal: None
4 Wanderlust
4 Cursed Land
4 Copper Tablet
4 Living Artifact
2 El-Hajjaj
2 Onulet
3 Fog
1 Ivory Tower
7 Forest
7 Swamp
2 Bayou
Green/White Deck: Tusk Guardian
Win Con 1: Ghazban aggro
Win Con 2: Elephant Regenerate
Removal: Divine Offering
4 War Elephant
4 War Mammoth
4 Ghazban Ogre
4 Healing Salve
2 Reverse Damage
2 Spirit Link
2 Divine Offering
3 Battering Ram
3 Elephant Graveyard
5 Forest
5 Plains
2 Savannah
Blue/Black Deck: Mind Stealer
Win Con 1: Old Man
Win Con 2: Wretched
Removal: Transmogrant + Steal Artifact, Weakness, Old Man.
Strategy: Gaseous Form their creatures so they can't damage you. Attack with The Wretched so you get their creature even if damage is prevented. Transmogrant their best creature so you can steal it with Steal Artifact, as it turns into an artifact.
4 Old Man of the Sea
4 The Wretched
4 Gaseous Form
2 Steal Artifact
2 Ashnod's Transmogrant
2 Clone
2 Enchantment Alteration
2 Marsh Gas
2 Weakness
7 Swamp
7 Island
2 Underground Sea
Blue/White Deck: Winged Stallion
Win Con 1: Angry Mob + Magical Hack
Win Con 2: Islandhome + Phantasmal Terrain
Removal: War Barge + Merfolk Assassin
4 Angry Mob
4 Dandan
7 Island
2 Lifetap
2 Magical Hack
2 Merchant Ship
2 Merfolk Assassin
4 Phantasmal Terrain
7 Plains
2 Sea Serpent
2 Tundra
2 War Barge
Black/White Deck: Nether Fiend
Win Con 1: Animate Dead + Big Creatures
Removal: Nettling Imp into Wurm
4 Nether Shadow
2 Nettling Imp
4 Elder Land Wurm
2 Mishra's War Machine
4 Animate Dead
2 Resurrection
2 Sacrifice
4 Bazaar of Baghdad
7 Swamp
7 Plains
2 Scrubland
Dragon Deck: Prismat
Win Con 1: Atog
Win Con 2: Black Vise + Winter Orb