if you have a team that can dive, a great combo to kill back liners would be to start your 2. blink on an enemy mid laner or ADC followed up with your 1 when the slow hits. then time-lock allowing your team to create peel for you.
having blink beads and time-lock on Ra is great for late game, but if your not a fan of using it, you can swap this out, if that is the case i would slot this item 3rd and move rod back to your 6th item.