I'll keep this entire thing brief because you're probably looking at this on the loading screen of dominion where you chose scion cause you just got tied to a radiator and graped by him using this build.

Scion in dominion is a complete and utter troll asshole who will melt everyone around him who isnt built straight up tank. And if you play it right you shouldnt die nearly at all except for maybe the windmill fight to start the game.

skill order is pretty obvious you wont really be using anything but your e because it increases your attack damage and in dominion the shield is pretty much useless. you can opt to switch between your q and your e just to get the cooldown of your stun shorter earlier but thats just preference.

Use your stun on the enemy carry or well anyone you happen to find. make sure your e is turned on and press your R. your lifesteal will be absolutely rediculous and you they shouldnt outlive your lifesteal late game. literally with your ultimate you will end up healing around 300+ per swing which will end up being like 3 or 4 swings per stun duration so if you get low stun and you're full health.

Its simple but effectively op right now to any normal solo q pub.