how to change some spell cooldown time or affect?

hello every one,now i use 3.3.5 branch as server.

when we want to raid some dungeons we are short of number.

so i want to create or change some spell affect to buff us,

but i can not find spell data in database tables.

they are not like items or creatures can be easily changed.

please help me, thank you all~

Spell.dbc

			30
		
		
			 uint32 
		
		
			RecoveryTime -
		
		
			 Cooldown of a spell. May differ with caster's level.
		
	[https://wowdev.wiki/DB/Spell](https://wowdev.wiki/DB/Spell)


			72-74 
		
		
			int32
		
		
			 [Effect](https://wowdev.wiki/Spell.dbc/Effect)[3]
		
		
			 - Type of effect which spell has. All following effect fields (and some at the end of DBC) reffer to these up to 3 effects.