Unlimited ability points.
To activating this glitch requires that you access the black emporium and purchase the potion "Makers Sigh" which will reset all of your ability points and attributes. Hawke comes preloaded with preset skills he/she is "supposed" to have. Meaning when you use a makers sigh and save, those abilities will be filled once you re-load. Here are the steps to using this glitch:
1. Use makers sigh
2. Save your game.
3. Load your game
4. Check your ability points because you should have the amount that were taken away, plus the ability's that Hawke is "supposed" to have. For a rogue it will be around four - five points in the dual wield tree (5) If you use another makers sigh, it will now add those ability's to the ability points available. You must save and reload each time you wish to do this again.