For Scholar:
A GCD spell that increases the target’s damage deal by 5%, similar cost to Broil
A GCD spell that lowers damage dealt by the enemy for 10 seconds, would probably have to be expensive like
Adloquium
A GCD spell like Libra / Analyze that creates a ‘weakness’ status effect on the enemy for a short duration (10–15 seconds), increasing the damage they take by 5%
An oGCD ability utilising aetherflow that causes shields to convert the remaining HP mitigation into direct healing, perhaps using an Aetherflow stack
An oGCD that removes the fairy but causes her to release an AoE heal (if Eos) or an AoE defensive buff (if Selene) before disappearing

The GCD abilities fit into the Scholar’s role lore-wise as tacticians that compensate for their small military by utilising powerful enhancing magics. The oGCD abilities fit into Scholar’s more practical role as a instant-casting, oGCD-based healer with versatile abilities that require planning to be used to their full effect