2 Air Sweepers are a Balloon's worst nightmare. However, 7 Haste Spells is a Balloon's best dream. Balloons do plenty of damage, so they don't really need the extra damage given to them by Rage Spells. They really just need the speed boost - hence Haste Spells are the way to go.
(No army intro)
Minimum Troop Housing Space Required: 220 Minimum Spell Housing Space Required: (not specified)
Use 1-5 balloons (or optionally hogs) to pull out the CC Troops.
Drop your Archer Queen (level 10+) in a corner with very few defenses.
Wait... The CC Troops should target your Archer Queen and head towards her.
Once the CC Troops get right up on the Queen, drop your Barbarian King and immediately rage both King and Queen. This should guarantee you to kill pretty much any CC Troops that they have.
Drop 3 Lava Hounds spread out along the attacking wall.
Drop all 20 Balloons spread out along attacking wall.
Drop the other 2 Lava Hounds - 1 along each side wall (about 25% of the way in).
Immediately drop 3 Haste Spells to speed your balloons in to the defenses (the key to this attack is speed - everything happens quickly).
Look for the defending Archer Queen (with !! over her head) and drop your Rage Spell right on her. This is so that when your Lava Hounds start to explode, the Lava Pups will attack the Archer Queen with Rage to kill her quicker.
Place 2 more Haste Spells to keep the Balloons flying quickly across the base.
Watch how the attack is unfolding, and drop the remaining 2 Haste Spells wherever it makes sense to speed up the balloons. Tip: The Haste Spell works well when your Balloons are fighting against an Air Sweeper. ----- Optionally, you could bring 1 Heal Spell instead of the last 2 Haste Spells. Tip: The Heal Spell works well to protect a group of Balloons approaching a Wizard Tower.
Cleanup will happen automatically with the remaining Balloons and Lava Hounds/Pups and possibly even your Archer Queen (who stayed alive the entire battle, if you are good).
(No execution notes)
You can use this attack to 3-star most (even maxed out) TH 9 bases in war. Enjoy.