Skeleton Army.
Skeleton Army is in here to deal with Prince and Hog Rider mainly. However, it can also be used to swarm other troops like Pekka, Mini Pekka and the Golem.
Goblin Gang
Both Goblin Gang and Skeleton Army cost the same Elixir but the Skeleton Army can potentally deal more damage. The Skeleton Army offers 1005 DPS while the Goblin Gang offers only 402 DPS (but it takes take times for every Skeleton gets locked on the target).
The Zap is not able to kill Goblins in the Goblin Gang, making it a great card when couple with Miner
The Hog still can land at least 1 hit at the Tower when being attacked by the Gang. However, Goblin Gang is more reliable at dealing with Hog since it can’t be completely killed by Zap.
Goblin Gang can completely shut down the Goblin Barrel without being harmed at all. Also, again, Goblins don’t die to Zap so your opponent can’t use Zap to protect the Goblin Barrel completely.
The Log, Tornado and Arrows are able to kill the whole Gang.
Great at dealing with Graveyard. The Gang also doesn’t die to the Poison instantly.
It shuts down the Battle Ram, Barbarians, Sparky, Elite Barbarians, Valkyrie, Minion Horde, Baby Dragon, Executioner (surround it)… completely for a positive Elixir trade.