Goblin Drill balance history

  1. — Goblin Drill Evolution
    • Goblins Spawned on Second Submerge: 2 → 1 (-50%)
    May Balance Changes
  2. — Goblin Drill Evolution
    • Goblins Spawned on Second Resurface: 1 → 2 (+100%)
    February Balance Changes
  3. — Goblin Drill Evolution
    • Spawn on submerge: 1 → 2 (+100%)
    November Balance Changes
  4. — Goblin Drill
    • First Goblin Spawn Speed: 0.8s → 1s (+25%)
    October Balance Changes!
  5. — Goblin Drill
    • First Goblin Spawn: 0.5sec → 0.8sec (+60%)
    May Balance Changes!
  6. — Goblin Drill
    • Travel Speed: +25%
    Balance Changes June 2022

Source: Clash Royale release notes by Supercell.