Originally Posted by MBirk
Are you sure sorc/guise and runes come after %? why would they do that?
There's a few mechanics threads out there.
Void would presumably be better for requiem, as you are right the direct effects of wall/abyssal require being close. Seems awfully situational to me however, I would think being much stronger in direct combat would be far more useful then periodic harrassing, pretty much all the time. and banshees veil goes a long way into neutralizing that. I'm arguing that void would be so situational, that its a bad choice 9 out of 10 times.
Void is superior to sorc shoes for raw MR pen any time their MR is above 50. If you have the talent, any time their MR is above 44. If I have basic shoes, and they've already got a negatron cloak or a chalice or a merc treads, I'm strongly considering working toward a void stick before upgrading my shoes.
In lower ELO games, people don't build MR -- half of them don't understand its value, and some choose to ignore MR to get more damage. In higher ELO games, people often will get merc treads (+30) for shoes for the variety of bonuses it gives, and that's just as a starter item.
One of your core abilities lowers MR. and that ability does not stack well with % reductions, while does with flat reductions. It would be like stacking ias on trist, when its a far better choice to stack crit and damage, as one of her core abilities gives her ias.
200 MR opponent
Wall takes it to 165
Voidstaff+Masterytalent %pen takes 165 to 74
Sorc Shoes + Marks (8.5) take 74 to 46
Without wall, MR taken to only 62.
31.5% red vs. 38.2% ... 800 damage ult goes from 548 to 494 (+50dmg) and that's an extreme example, I don't see 200 MR people very often.
Or another way to put it;
With 28 MR Pen, and void+mastery, anyone with MR 62 or below is MR 0.
With wall on top of that, anyone with MR 97 or below is MR 0.
Wall stacks fine with pen.
As far as the situational/nonsituational goes... the entire game is situational
I don't buy see invis wards unless I need them, I don't buy armor unless I'm facing a lot of high damage physical dps, I don't buy MR unless I'm facing a lot of magic damage, I don't buy pen unless I'm seeing a lot of high MR... etc
On carries I don't buy an exe calling unless I see an opponent with lifesteal or a healer, etc etc etc