I have to disagree about the impact. 50 , 75, 100 gold, science, etc in the early game is huge. Some of the events have massive rewards like the army Leucarum mentioned.
I agree. I think narrative event is one of the more underappreciated aspects of civ7. While they are numerically small boons and don't carry the game for you, they often add significant momentum in the early turns (akin to herdables in AoE series if you play those games). That said, I personally don't go out of my way to try to memorize all of them for a few reasons:
- There are thousands of them by now--it's just not practical nor deemed worth my time to do so. Maybe one day someone with enough passion and modding skills will make a mod to keep track of them.
- Most generic narrative events are determined randomly each game, though with a few exceptions. All of them are not reproducible every game due to chance. Narrative events specific to leaders and civs are guaranteed 100% reproducible, but great persons' are not.
- Unless the rewards are attribute points, they scale unfavorably as the game goes on.
- Many of them have trigger requirements that are steep or just make you stray away from what you want to do.
Still, the most important ones that worth aiming for are the ones in Antiquity associated with improving resources such as hides x2, sheep, cotton, wine, silk, iron x2, fish, and dye x2; or slotting in/slotting out policies (almost all of them in Antiquity). These are convenient because they reinforce settling for resources in early games, which is what you want to do most of the times. Most of these aforementioned resources are also valuable in early game as well. For the ones associated with policies, just slot in and out any new policies you get to fish for trigger--small hassle, but quick and easy; there are specific ones that are probably worth keeping in the back of your head:
- Tool Making + 2 irons
- Priesthood + 1 altar
- City Guard + peace w/ all
- Clan Network + 1 hide + 1 horse
- Honor Policy + 2 disperses
These policies are positioned early in the civic trees, where your yields are at most scarce, so they're always worth to fish for. Last 2 are probably not worth as much as other 3, since their rewards are +% production and +culture. Again, their trigger is based on chance, so you won't get to trigger all of them, thus I rather not bother memorizing the ones that require you to invest any type of resources or straying away from the planned strategy.