Lvl	Effect	MP	Duration
1	ASPD +2.5%	30	0:40
2	ASPD +5.0%	31	0:45
3	ASPD +7.5%	32	0:50
4	ASPD +10%	33	0:55
5	ASPD +12.5%	34	1:00
6	ASPD +15%	35	1:05
7	ASPD +17.5%	36	1:10
8	ASPD +20%	37	1:15
9	ASPD +22.5%	38	1:20
10	ASPD +25%	39	1:25

Increasing the attack speed of a Ranger