I take flash and heal because flash to escape form sticky situations and heal to save you and your carry in team fights and

I Start with boots and health potion to stay in lane then when I am level 6 I usually ulti on to my solo top or if the carry is tower diving I ussaly buy Bloodthister because of life steal and black clever because of amour pen and the Warmongs and Sunfires cape for farming and for off tank I take spirit visage for the Cooldown reduction and for the health and some times I swap shurelya's Reverie for Athens unholy grail

I chose the 21 in defence and the 9 in utility because it give you more sustain in lane and if can help you tower dive and late game

I chose the energy glyphs because early game if Your spawn Vorpal blade I tend to see that people run out of energy and the the health runes are for late game health and off tank the attack speed is for a 1v1 in the jungle because with the attack speed and the taunts Shen can nearly 1v1 any body the Quints give you more energy combined with the glyphs

this build shows of the off Tanky support Shen that I love to play this build can be full tank Shen or support Shen if playing support usually go bottom lane with your Attack Damage carry (ADC) I like to lane with a draven or graves if tank I suggest going solo top and I suggest having good coordination's with your jungler which should be probably lee sin or trundle