This is missing archangel staff, rod of ages and trinity force.

very good guide thx i know blue ez befor but it help me to win games thx:)

I personally take about 4/6 of the items listed in this blue build.

BOTRK, Last Whisper, IBG Essence Reaver. With IBG and Essence Reaver as Core. These two alone provide enough CDR and sustain for me to last throughout the game without a muramane. In addition the slow provides additional cc to my team and extra kiting ability.

I disagree with Trinity. Far too expensive an item to go for. The damage is what most people get it for but I find the armour and AP far better compliments.

I personally like blue ez because he really is fun to play, however i usually like to take ghost in summoner spell (IT"S BLUE) and then take the enchantment distortion to be an even more slippery adc.
So maybe you could consider adding a section for summoner spells and explains why you would prefer one over the other.

favo and +1 really like this build ^^

Actually Essence Reaver in fact can help a lot on blue ez due to the fact Q counts as an AA. Also, Blue Ez is viable in those really really really rare situations where you need to peel for someone else.

Blue Ezreal is outdated and not as effective as Trinity Ezreal. Your runes are also quite outdated. I am not very sure about Essence Reaver since it's not really slot efficient especially late game. On top of this your guide lacks a lot of information especially as far as gameplay is concerned.