This, but usually your build should be manamune, triforce, bloodthrister, infinity edge and lw. This build work great to poke/ burst squishy people.
Another build is blue ezreal to peel away from engaging team like mai, gnar, jax, irelia(people that on ur ass every team fight). You should get manamune, gauntlet, bortk, lw, black cleaver and zephyr/ ionian/ defensive item. This build let allow you to slow down enemy front line and kite back, prolong the fight and keep poking them.
Last one is the hyper carry build with triforce, infinity edge, bloodthirster, lw, pd, boots/ zephyr/ defensive item. This is a very high risk high reward build. You build this when you are stomping the enemy and have a huge lead. Enemy team can not surive your burst and you should push to try end the game or their real hyper carry like vayne, trist, kog 2 shots you.