Game Lamprey hungers

Game Lamprey wants to offer you something in exchange for food

Game Lamprey will make your life easier, as a player, if you feed it

Game Lamprey eats one thing: game rules. You don't get to pick which ones. That's up the Lamprey. But it probably won't be too important this one time, right? And it'd be real cool to succeed on this roll right now.

Just a little nibble, is all. Couldn't hurt.