Some stuff about Necrons - new question

HolyCause wrote:per RAW, if Scarabs that turboboost are hit with markerlights twice their cover save is still only 3+. I would assume that 40K uses a sort of "add up all of the modifiers" system, but if anyone wishes to disagree with that (or outright disallow it), please post!

I just skimmed the rules, shouldn't it be a 4+ if he used two markerlights? 3+ for turboboosting, another 1+ for small target (now a 2+ - damn that's a hard to hit target) and then -2 for the two markerlights (which are cumulative as per the codex) so back to +4 cover save. If enough markerlights hit there is potential for no cover save.

I don't think so, since Scarabs get 3+ for turbo boosting like a jetbike, -1 to 2+ for the stealth USR from being swarms, -1 again for Small target [used to be a USR however luckily the codexs take precedence and the rules for small target are written in the codex] however you can't have a 1+ cover save so we're at 2+ still, which to me, if you did a +1 to my cover save would mean that I'm still at a 2+ cover save because of adding up all the modifiers affecting my unit, then the second marker light would raise my cover to 3+

3+ (turbo boost) -1 (small target) -1 (stealth) +2 (Markerlight) = 3+

Fancy math indeed!