Harvey pulls out a coin from his suspender pocket and flicks it into the nearby field to grow the greatest magical system known to whatever this world is called!
Farmer's Reward Program
Whenever someone harvests an agricultural product, there is a random chance that they will receive a cute token with a cartoon on it. For plant products this token will have a picture of a Mortalized cartoon of the most popular local crop (ex a mortal with two eyes and two mouths in corn country would receive a token with a cartoon corn with two eyes and two mouths). For animal products, this will have a cute cartoon of the most popular local animal. In either case the other side of the coin has Harvey Harvest standing majestically in his coin field. These coins are metaphysical and non-transferable, while one can summon a coin to show it off nobody else can actually do anything besides see it.
To use these coins one must meditate at an appropriate totem pole, bringing there mind to the Farmer's Market. Here they can purchase a variety of Boons in return for their Tokens. Plant and Animal tokens are equivalent in value, however the rates are set so neither is inherently easier to get than the other (something like milking a cow daily will only give a small chance for a coin, while slaughtering a cow would give a chance for multiple coins for example). The power of the Boon is tied to the amount of tokens, with the more tokens spent representing more powerful Boons. Boons grow from the seed of mortal desire, if mortals wish to fly then a Boon allowing mortals to fly will appear in the Farmer's Market for an appropriate price. If mortals wish for health, a Boon granting health will appear in the Farmer's Market for an appropriate price. As a limitation it can not directly effect people other than the token spender. If one wishes to kill a rival, they would be capable of buying great strength or invisibility or the ability to shoot lasers out of their eyes, but they would not be able to cause the target to simply fall over dead.