It's all in the cards!
Henzell says...
  1. Heroism (1*) temporarily gives +5 to all non-magic skills except Invocations and Evocations, although Fighting skill from it gives no extra HP. Finesse (4*) halves attack delay but does not stack with haste or berserk. At 5*, periodically gifts throwing weapons. At 6*, Oka will offer 4 acquirement-level weapons and armours. You get to pick one each!
  2. Gives almost no piety for easy fights, none at all for trivial ones.
  3. Heroism: 2 MP and 1 Piety, Finesse: Costs 5 MP and 3 Piety. Duration of both: 10 + 3*(1dInv + 1dInv); 100 turns cap.
  4. You finish putting on the -5 robe of Misfortune {god gift, -cast contam+ *tele ev-4 str-2 dex-2 int-2 stlth-- curse}.
  5. <G-Flex> I picture oka as this old guy going through his attic and just discarding old junk as gifts
  6. < valrus> I AM OKAWARU, GOD OF COMBAT AND FIVE DOLLARS FOR THE OSCILLATING FAN IS MY FINAL OFFER

Information based on master branch and the great LearnDB.
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