Rule Details
Give out 1 Hero Point to each PC at the start of the session. Give out roughly 1 more per hour of play, for a heroic act or a moderate or major accomplishment. Hero Points can be spent in two ways.
Spend 1 Hero Point to reroll a check and use the second result. This is a fortune effect.
Spend all your Hero Points to avoid death. You can do this when your dying condition would increase. Lose the dying condition and stabilize with 0 Hit Points. Don't gain or increase your wounded value from losing the dying condition in this way, but if you already had that condition you don't lose it or decrease it.