Hello! I recorded the Global Top 100 battle decks used in the previous season and am posting the results here. This list may help answer questions regarding which cards you should request from clanmates, purchase with gold, and ultimately include in your deck.
Ice Golem claims The Frozen Throne at the top of this season's snapshot! This mini-tank serves as the perfect add-on to protect weakened troops for a counterattack or to distract, damage, and slow oncoming threats. Zapis a close second, seeing play in over three-quarters of all top decks. Another two-elixir, versatile card, Zap is the perfect support spell to quickly eliminate defensive swarms, but gains insane value for its ability to reset an opponent's target.
Mega Minion and Musketeer follow shortly after--each member of the glass cannon duo dishes out a ton of damage, but still survives a Fireball. The Fireball has held onto its top-tier spot as the most popular medium-cost spell for eliminating mid-sized threats wherever they arise. Minions have gained steadily as a cheap swarm counter; they still outrank their closest competitor, the Archers.
Tombstone continues to make gains against the chip-damaging Furnace and purely defensive Cannon. The Tombstone doesn't dish out much damage alone, but it remains the best distraction card in the game. It also towers over Inferno Tower, which saw a slight uptick in usage. The Elixir Collector has finally made its return in full force, primarily as fuel to cycle massive beatdown pushes with Elite Barbarians.
The Log is still rolling around the middle tier--it earns great value against ground swarms and its pushback is also necessary to keep attackers off siege emplacements. Bowler has cemented himself as the defining troop for control decks, bowling over the competition with reliable damage output and a hearty pool of hitpoints.
Freeze works wonders at the top of the ladder thanks to its lengthy duration at max level. It often accompanies high DPS cards like Elite Barbarians or the Graveyard,considered by many top players to be the best offensive card in game. The spooky spell enjoys a very high use-rate despite most players having it at only level 3. Ice Spirit still sees some usage at the top, but is now in freefall due to the lack of viable targets.
Hog Rider and Giant remain competitive win conditions at the top of the ladder, but both continue to fall relative to their competition. They are followed closely by Balloon decks, some of which utilize Lava Hound for a beatdown approach, while others rely on Bowler. Bolstered by a Global #1 performance in the hands of /u/Pompeyo4, X-Bow and Rocket did quite well this season. Spell bait cards like Skeleton Army, Goblin Barrel and Minion Horde saw continued usage, but are rapidly falling from favor.
Graveyard-Bowler Control (15 appearances of this deck archetype): Bowler, Graveyard, Tombstone, Freeze, Ice Golem, Zap, and CHOOSE ONE: [Mega Minion, Archers] (10); OR [Minions, Musketeer] (5)
Giant-Elite Barbarians Beatdown (9 appearances of this deck archetype): Giant, Elite Barbarians, Musketeer, Ice Golem, Zap, Fireball, Minions, Elixir Collector
X-Bow Siege (9 appearances of this deck archetype): X-Bow, Rocket, Inferno Tower, Mega Minion, Archers, Ice Golem, The Log, Ice Spirit
Hog Rider Control (8 appearances of this deck archetype): Hog Rider, Musketeer, Ice Golem, Fireball, Ice Spirit, Zap, Cannon, and CHOOSE ONE: [Minions] (4); OR [Skeletons] (4)
Hog Rider-Freeze Beatdown (7 appearances of this deck archetype): Hog Rider, Freeze, Elite Barbarians, Musketeer, Ice Golem, Zap, Minions, and Elixir Collector
Furnace-Mirror Spell Bait (6 appearances of this deck archetype): Minion Horde, Goblin Barrel, Skeleton Army, Furnace, Mirror, Fireball, The Log, and CHOOSE ONE: [Bowler] (2); OR [Spear Goblins] (2); OR [Archers] (1); OR [Princess] (1)
Lava Hound-Balloon Beatdown (6 appearances of this deck archetype): Lava Hound, Balloon, Mega Minion, Tombstone, Zap, Fireball, Skeleton Army, Minions
Balloon-Bowler Control (4 appearances of this deck archetype): Balloon, Bowler, Freeze, Mega Minion, Archers, Tombstone, Ice Golem, Zap
View the raw data here:https://drive.google.com/file/d/0Bwjlik6zlomPSG5sLUNnWWY4WkU/view?usp=sharing