Items for Thresh
Ancient Coin for the extra Mana Reg for more Hooks. Also ur Ranged, so u can screw ur Adcs CS with Green Sup Item.
Mobiboots are really good if u can roam much, CDR Boots are an Option if u have an ADC with low self sufficiency, as u cant roam much anyway, and CDR Boots grant u more flashes.
Get CDR Items to have more hooks! Finishing 45% CDR is 1st priority in Itemization.