Earthquake Spell at Town Hall 14: max level 6. At Town Hall 18 the cap is level 8. It unlocks at Town Hall 8. Max level per Town Hall: TH8 2, TH9 3, TH10 4, TH11 5, TH12 5, TH13 5, TH14 6, TH15 6, TH16 7, TH17 7, TH18 8.
Tap a Town Hall to open this item there. Dashed: not available at that Town Hall yet.