400
Your vision score is 0.17 per minute; Silver players average 0.70. Buy a control ward on every recall (75 gold is the cheapest insurance in the game), use your trinket off cooldown and sweep the river before objectives.
You take part in 37% of your team's kills; Silver players average 52%. After your first item, look to rotate for dragon, grubs and herald, and keep Teleport for fights rather than for farming.
You spend 36% of your games dead. Late deaths cost a minute each; when a fight is lost, back off and defend rather than adding one more death to it.
You typically come out of lane ahead of your opponent. Turn that lead into map pressure: shove, take plates, then move to help another lane while your opponent is stuck.
