Electro Dragon balance history

  1. — Electro Dragon
    • Hitpoints: 998 → 1049 (+5%)
    June Balance Changes
  2. — Electro Dragon Evolution
    • Extra Chain Damage: 128 → 64 (-50%)
    March Balance Changes
  3. — Electro Dragon
    • Hitpoints: 949 → 998 (+5%)
    March Balance Changes
  4. — Electro Dragon Evolution
    • 192 → 128 (-33%)
    January Balance Changes

Source: Clash Royale release notes by Supercell.