Level Gains for Terra, Celes, Sabin, and Cyan

Terra

LV. 1 - Cure
LV. 3 - Fire
LV. 6 - Antdot
LV. 12 - Drain
LV. 18 - Life
LV. 22 - Fire 2
LV. 26 - Warp
LV. 33 - Cure 2
LV. 37 - Dispel
LV. 43 - Fire 3
LV. 49 - Life 2
LV. 57 - Pearl
LV. 68 - Break
LV. 75 - Quartr
LV. 86 - Merton
LV. 99 - Ultima

Celes

LV. 1 - Ice
LV. 4 - Cure
LV. 8 - Antdot
LV. 13 - Imp
LV. 18 - Scan
LV. 22 - Safe
LV. 26 - Ice 2
LV. 32 - Haste & Muddle
LV. 40 - Bserk
LV. 42 - Ice 3
LV. 48 - Vanish
LV. 52 - Haste2
LV. 72 - Pearl
LV. 81 - Flare
LV. 98 - Meteor

Cyan

LV. 1 - Dispatch
LV. 6 - Retort
LV. 12 - Slash
LV. 15 - Quadra Slam
LV. 24 - Empowerer
LV. 34 - Stunner
LV. 44 - Quadra Slam
LV. 70 - Cleave

Sabin

LV. 1 - Pummel
LV. 6 - AuraBolt
LV. 10 - Suplex
LV. 15 - Fire Dance
LV. 23 - Mantra
LV. 30 - Air Blade
LV. 42 - Spiraler
LV. 70 - Bum Rush

Enemy spells vulnerable to Runic:

Megazerk
Blaster 
Atomic Ray 
Tek Laser 
Diffuser 
Mega Volt 
Giga Volt 
50 Gs 
N. Cross 
HyperDrive 
Disaster 
Shimsham 
Scar Beam 
Fire Wall