Hi, i'm Pileofpuke :p Welcome to my Shen build

You might be thinking "WTF AP Shen??" But he is a good AP champ. He has a good burst damage with a slow from Rylei's. He hits about 600 with Vorpal Blade and then he deals 500 with a auto attack with lich bane and Ki Strike (200 dmg) so it is a good combo hitting up to 1k damage on the first hit and 700-900 on the next (without Ki Strike). You see he can do damage if he gets the items to do it.

AP Shen is a bit like Akali. Dash in, hit hard and then be hard to kill because you dont take damage with his shield that can absorb 600 dmg. He will still be a good support with his ulti and taunt to save people.

Skills

Ki Strike - Every 8 seconds, Shen's next attack deals bonus damage.

Vorpal Blade - Deals 50 / 95 / 140 / 185 / 230 (+65% of ability power) magic damage to target unit. That unit becomes life tapped for 5 seconds, healing any champions who attack it for 10 / 20 / 30 / 40 / 50 (+20% of ability power) health over 3 seconds.

Cost 70 / 65 / 60 / 55 / 50 mana | Range 475
Feint - Shen enters a defensive stance, shielding the next 50 / 100 / 150 / 200 / 250 (+60% of ability power) damage. Lasts up to 1.5 seconds.

Cost 45 mana | Range 20
Shadow Dash - Shen rapidly dashes to a target location, Taunting enemies he collides with for 0.8 / 1.1 / 1.4 / 1.7 / 2 second(s).
Restores 50 Energy if you hit a champion.

Cost 120 / 115 / 110 / 105 / 100 mana | Range 250
Stand United - Places a shield on both a target allied champion and Shen, absorbing 300 / 525 / 750 (+100% of ability power) damage for 7.5 seconds (Shen's shield absorbs half as much damage). After channeling for 2.5 seconds, Shen teleports to the target's location.

Cost 50 mana | Range 25000