So the text is clear about how to permanaetly kill a Tier 9 Mythic hero but gives little information about coming back. Plus little mention when they are "not quite dead yet" issues. So here are a few questions I have (text of ability will be at bottom of post)
1. Where do they come back to life at? Where they died or some place random or close to them?
2. Does their old body reform (from whatever's left) or is it a new body?
3. Will they come back to life if not specifically killed? Such as petrification or if they starve to death?
Personally, here's my ideas on replies to my own questions:
1. I assume where they died. Though making it random, say 1d1000 miles from original death location, gives them a chance if they died in a hostile area (such as a volcano).
2. If I go with where they died, then old body reforms (even if dust). If I go with random location, then new body.
3. Petrification, they're stuck that way until at least the statue is destroyed. Though might have to wait until it's turned to flesh. I guess if they die from starvation, they're dead :)
Immortal (Su): At 9th tier, if you are killed, you return to life 24 hours later, regardless of the condition of your body or the means by which you were killed. When you return to life, you aren't treated as if you had rested, and don't regain the use of abilities that recharge with rest until you next rest. This ability doesn't apply if you're killed by a coup de grace or critical hit performed by either a mythic creature (or creature of even greater power) or a non-mythic creature wielding a weapon capable of bypassing epic damage reduction. At 10th tier, you can be killed only by a coup de grace or critical hit made with an artifact.