At TH13 you can unlock Royal Champion hero that can jumps over walls and targets defenses first. This makes her one of the most important hero addition in Clash of Clans.

ClashCodes provides best TH13 base links for Clan War, CWL and Legend League. Variety of layouts are available including Anti-2 Star, Anti-3 Star, Hybrid, Farming, War, Defense and Anti-Everything designs.
These TH13 BaseLayouts help you to prevent your base from getting tripled or even end up with just 1 star.
TH13 unlocks two troops: Dragon Rider (elixir) and Apprentice Warden (dark elixir). New Recall Spell which allows you to withdraw heroes and troops and redeploy them where you want.
You'll also unlock 2 additional siege machines like siege barracks and log launcher. Finally most powerful scattershot defense that hurls heavy rocks at troops and heroes.
You can place extra walls upgraded to max of level 13 along with bomb, spring and spike trap.
TH13 unlocks Royal Champion, Dragon Rider, Apprentice Warden, Recall Spell, Siege Barracks, Log Launcher and Scattershot defense.
The Royal Champion jumps walls and targets defenses first. Her Seeking Shield can wipe multiple defenses fast, so bases and attacks at TH13 are built heavily around her value.
You unlock Dragon Rider, an air unit that focuses on defenses and Apprentice Warden Dark Elixir support troop that boosts nearby units. Both are key pieces in TH13 attack comps.
Recall lets you withdraw troops or heroes out mid attack and redeploy them elsewhere. Use it to save high value units or reposition after grabbing early value.
You get Siege Barracks, which spawns extra troops before releasing CC troops and Log Launcher, which clears defenses in a straight line while carrying Clan Castle troops.
Scattershot fires heavy splash damage that crushes packed troops. It’s one of the most dangerous defenses at TH13 and must be planned around in every attack.
TH13 adds extra wall segments upgradeable to level 13, plus more bombs, spring traps and spike traps.
Anti-3 Star bases are used for Clan Wars, Anti-2 Star designs for CWL and Legends and Hybrid or Farming bases for loot protection. Right Scattershot placement is critical.
Popular TH13 attacks include Yeti Smash (Yetis, Bowlers and Healers), Hybrid (Miners + Hog Riders with Queen Walk) and Dragon Rider + Royal Champion combos. Each strategy takes advantage of TH13’s new troops and siege machines for consistent 3-star wins.