User blog comment:YourPrivateNightmare/The mystery of Blue Ezreal/@comment-1679053-20130619020615

Blue build is a curse among all Ezreal players. Not so much the item choices though.

actually is okay for early game mana and damage. Good if you're doing okay but not great and need a bit more help with mana.

is perfect for late game CC and increased damage in a greater area, plus the extra armor is great if the enemy team is 60%+ ad-based.

is needed if at least 60% of the enemy team has over 90 armor, and at least one has over 130 armor. Otherwise or simply more damage  would work better.

But these items are what make blue build so terrible.

should (almost) never be needed by an adc, even one who relies on his attacks like.

is the one item that makes this build so stupid. It is a JUNGLE item, and should never be even considered by a carry. It costs 450 gold more than a and gives 10 less damage for two near-useless passives (For carries) and a small boost of health/mana regen. You will (almost) never get a kill with the DoT, and more often than not, it's just a nuisance. Not worth it in the least bit.