Past Life Feats

Past Life Feats
There are two kinds of Past Life Feats.
 * "Past Life: " is free.
 * "Past Life: " costs a feat slot.

Dominant Class
You gain the Past Life of your dominant class (i.e., the class that is shown as your character's class icon in parties), which is determined by the class you have the most levels of. In the case of a tie, the dominant class is the highest on this list: That is: alphabetical for the original 9 classes, then new classes added at the end in order of release. source
 * 1) Barbarian
 * 2) Bard
 * 3) Cleric
 * 4) Fighter
 * 5) Paladin
 * 6) Ranger
 * 7) Rogue
 * 8) Sorcerer
 * 9) Wizard
 * 10) Monk
 * 11) Favored Soul
 * 12) Artificer

Tier 1 Past Life Feats (free)
If you True Reincarnate again, you keep your old Past Life feat from your first incarnation, and add a second from your dominant class from this life. Each feat can be stacked up to three times.

Tier 2 Past Life Feats (Requires a feat slot.)
When you true reincarnate, you'll end up with a new feat called "Past Life: Cleric", or the like. Those act as prerequisites for other (new) feats, listed here:


 * Caster Level is considered to be equal to your character level.

Developer quotes
All by lead developer Eladrin