Thinking about getting back into Deathnote-Want questions answered beforehand

[Scowling Dragon]

Well, „pentagram” is a concept the prisoner might know, the same goes for that weird poem he made people write.
Although that one stretches things a bit.

But that guy named „L”? Literally a unknown entity.

L is also a letter. That doesn't make any sense at all. If he wrote "I want him to write 100 unrelated letter just in a specific pattern the way Im writing it down now" would that work?

What if the sentance was a poem? Just a very short one that doesn't rhyme.

Like thats my shattering of immersion. Its when the plot actively requires mind caulk to make sense, thats when I just can't believe it.
And why can he control truck accidents and not prison escapes? Could the prisoner escape if he gave him like 10 hours or the like?
When what can happen is arbitrary it makes most of the mind games "And then the author allows X to happen".