For the Q...how is that rude? It is the exact description of the skill: He uses a slot of his entire kit to get a short term, undestroyable pink ward. That's the entire skill: he gets a pink ward for Q. It doesn't do damage, it doesn't help him survive or kite well; it's just a short term pink ward. if it's undestroyable, it's broken (oh look, he has permanent true vision in an area. Guess we can't gank him without a teleport) while still being really weak (he doesn't get any form of damage, survivability, self buffs, or real safety. He gets a pink ward).
And yes, if your trap gives vision it should either be destroyable, or extremely transient vision(such as Shaco's Boxes/Teemo Shrooms. They both give vision, though only in a short range, can both be destroyed by either walking over them (dangerous, but it does destroy them) or using a pink ward/red trinket to see and destroy them. For transient, think Caitlyn/Nidalee traps; they only give vision for a very short time when placed, followed by giving vision if they are activated. This allows people (even though they can't really destroy the traps) to dodge them, which gives them some counterplay).
For the comparisons, the point is these all seem like weaker versions of another champ's kit. His W is basically a Rek'Sai tunnel that anyone on his team can use (for the only used on terrain, that's almost the only time Rek'Sai uses her tunnels; for an escape that requires wall hopping for others to follow or to jump right onto someone. It's almost always used through terrain to begin with). While it's useful, it's only really good in a few niche cases (you got trapped in baron/dragon pit, you got trapped in their base after a dive). Overall, outside of the niche cases it's kinda eh. It could be used for a teamwide flank, but other champions have more powerful forms of that (Sivir R, Sona E, Nami R, Talisman of Ascension (for an item that does this)). Overall, it just seems rather specialized (while specialization isn't BAD (Sivir is a great AoE short range carry, Vayne is a lategame carry with extremely short range), making it to specialized is; you want a skill to be only somewhat niche, not extremely).
For the E, you're making an entirely new champion. Try to make things more unique, or at least a bit more different than another champions skill with the damage type changed. At least add something to differentiate it; make it an actual shot (think an actual ranged system like Rumble R/Viktor E), or have it lower armor and/or magic resist, or something (note, these are ideas. I'm certain there are many greater ones than those). If your skill is literally a copy paste with the damage type changed there's little reason to consider the champion you copied/the champion you made unless the rest of their kit is greater.
...not really sure why'd you choose to compare graves R + Tristana's R. One is an AoE giant burst, one is a semi large magic damage that knocks back any champions in the AoE. Other than the AoE existing (which would make any AoE skill compared), they are nowhere near similar.
Not really sure on a good direction for the lore, but the current one is highly unbelievable (and since most of the people who pay attention to the lore either read it once and then ignored it or followed all of it they can, that's pretty huge. The people who ignore it will continue to not really care, and the people who follow it will point out all the problems they can notice (if you checked after Amumu's updated lore hit PBE there was instantly a thread about how it didn't tell anything new about him).