SKELETON 3 ELIXIR

Skeleton King - Carry
Bowler - Flank/Tank
Giant Skeleton - Tank
Mini Pekka - Specialist
Healing Ranger - Heal/Anti-CC
Fisherman - Flank

Matchups

Barbarian King 2 Elixir
Play Giant Skeleton's 1st and 3rd star to kill all squishies, bowler 1st and 3rd star to kill archer, mini pekka dissipate against Barbarian King and fisherman against enemy archer. Pull enemy backline either archer or wizard. It doesn't matter if you accidentally pull a barbarian or a lumberjack. Always put your skeleton king behind your fisherman to wipe the enemy setup. Against BK2E, don't use healing ranger unless you have saint mirror. Place saint mirror in the back and kill enemy archer with it. It can also distract an enemy dissipate miner.

WM LOB
Play Skeleton King to whatever carry that is isolated. The enemy cannot lob anything to your side of the arena without being isolated and taking lots of damage while giving little amounts of value. Fisherman counters dart goblin, musketeer or healing ranger while Giant skeleton 1st star is really helpful against your opponents' squishy tanks. Bowler is mostly unused. Mini Pekka can be used for dissipate against swordsman and wave master.

AQ
Play Fisherman to counter their backlines. Healing Ranger will always come in clutch to heal up your entire team. 3 star bowler is always useful against the enemy while giant skeleton 1 and 3 star will nuke the enemy team. Mini Pekka is unused unless you are facing against Mega Knight.