Can i suggest a support item?

400g+ruby= http://vignette2.wikia.nocookie.net/leagueoflegends/images/9/98/Eleisa%27s_Miracle_item.png/revision/latest?cb=20130319090310&format=webp

Heart of the watchers: Each time a ward is placed 1 charge is added to heart fo the watchers. One charge may be expended to consume 25g and place a "water ward" which is visible, has 1hit, and lasts 60 seconds. At 25 charges transforms into "blessing of the watchers". This item can only be taken if you have gold support. +25 movement speed

Blessing of the watchers http://vignette1.wikia.nocookie.net/leagueoflegends/images/7/71/Priscilla%27s_Blessing_item.png/revision/latest?cb=20130110021724&format=webp :

+50 movement speed +40AP Can consume 25g to place a 60 second 1hit visible ward. When moving away from enemy champions, gain 20% movement speed