Sayge offers a series of very useful buffs if you answer his questions correctly.

1.1 +10% Damage - 1st: Slay the Man 2nd: Execute your friend painfully
1.2 +10% Magical Resist - 1st: Slay the Man 2nd: Execute your friend painlessly
1.3 +10% Armor - 1st: Slay the Man 2nd: Let your friend go
2.1 +10% Spirit - 1st: Turn him over to liege 2nd: Confront the diplomat
2.2 +10% Int - 1st: Turn him over to liege 2nd: Show not so quiet defiance
2.3 +10% Magical Resistance - 1st: Turn him over to liege 2nd: Remain quiet
3.1 +10% Stamina - 1st: Confiscate the corn 2nd: Speak against your brother openly
3.2 +10% Strength - 1st: Confiscate the corn 2nd: Help your brother in
3.3 +10% Agility - 1st: Confiscate the Corn 2nd: Keep your brother out without letting him know.
4.1 +10% Int - 1st: Let him go and have the corn 2nd: Take credit, keep gold.
4.2 +10% Spirit - 1st: Let him go and have the corn 2nd: Take credit, Share the gold.
4.3 +10% Armor - 1st: Let him go and have the corn: 2nd: Let the knight take credit

WoWWiki has good information on this also http://www.wowwiki.com/Sayge%27s_Fortunes#Guide_to_Answering_Sayge http://www.wowwiki.com/Sayge%27s_Fortunes#Guide_to_Answering_Sayge

The buffs disapears if you zone in to an instance.

Buffs go on base stats, so rather weak.

Going for damage is your best bet.

Sayge is an homage to the classic http://en.wikipedia.org/wiki/Ultima_(series) Ultima series of role playing games. In Ultima IV, V, VI and IX, the game began with a meeting with http://ultima.wikia.com/wiki/The_Gypsy The Gypsy fortune teller, and your answers to her moral dilemmas determined the stats your character would begin with.

Rumored to be Hogger's wise relative, whose fortunes have a hidden meaning: Stay away from Hogger!

I don't know about the others, but the ""+10% to stamina"" buff gave me a grand total of 180 health. Since I have 2761 stamina unbuffed, that's a little over half a percent.

I have 172 base stamina though, and 10% of that with talents would work out to about what I'm getting.

The cooldown is 4 hours of /played time. Meaning you have to be online for the cooldown to tick off.

Edit: Testing in 5.2.0 shows the cooldown is still 4 hours, but you no longer have to be online for it to tick off.

Here's my results on which damage buff I've been getting. The sample size is 25, which is pretty small, but I'll keep updating as the months go on (hoping to have a decent sample size by the time I get all the pets/mounts). The list number is the damage modifier. The percent listed next to it is how often I got the buff (example is item #6: 20% of the time I got the *106% damage modifier).

Keep in mind the Buff description always just says 5%, you have to go into your character stats to see what the actual modifier is. I had asked others to help me gather data, but most of them aren't looking in the right spot (even after explaining 12 times to open their character pane they keep saying ""I only ever get 5%"").

1. 8%
2. 12%
3. 12%
4. 20%
5. 8%
6. 20%
7. 4%
8. 4%
9. 0%
10. 12%

FYI, 'damage' seems to refer only to melee damage, or so the character page would suggest: I only see the multiplier (x110% in my case) under melee. Not ranged or spell damage.