2 attacks in same turn

[Corvus Sangreal]

How to make that some character can have 2 turns in one turn. In other words to have 2 attacks.

1. after some level of dexterity

2. while using a skill (haste?)

[:)]

hmmmm, I doin't know exactly but you could use a speed based battle system and turn their speed UP and others down....but thats probally not gona help