While many play Renekton more of a tankish dps than damage dealer i think that he has true potency for a dmg carry. My build focuses on intense damage and lifesteal coupled with cooldown reduction glyphs to make him more substinent in lane. Third game with this exact build got me 20/3/8 and many other games went down a similar root. With an early point in ruthless predetor, the player can harass often and then at level three, the ganking options are limitless. Jump in with slice and dice, stun with ruthless predetor and then do your big dmg cull the meek. Couple this with another champion like say, Veigar for example, you get a garenteed double stun. If you nail both stuns and do not get a kill, you might just shoot yourself in the back of the head.

Good hunting/ Hoak