This build is not my own, it was taught to me by the greatest of Ornn Supports Zodra, Master Ornn Support OTP.

Ornn Support truly shines into low poke matchups when your team has need of a tank or strong utility, but can be played into most matchups with practice. Champions to watch out for are things like Yuumi, Soraka, or Sona who can outpoke you and force you to buy antiheal early, or champions like Yasuo and Samira whose windwalls can block your R.

For Runes you will pretty much always use the runes you see in this guide, although I will go through some of the changes you can make if you feel the need.

Guardian vs Aftershock:
Guardian is my go-to, but aftershock can be good if you won't be able to engage often into the enemy team and need survivability to better peel

Second Wind vs Bone Plating:
Simply put; Second Wind into poke, Bone Plating into heavy all-in

Ghost Poros vs Zombie Wards:
Ghost Poros is better if you can't rely on the enemy to place useful wards, or if you know they may be slow to clear your's

Ultimate Hunter vs Ingenious Hunter:
Ultimate Hunter is almost always better, but you could maybe make the case that Ingenious Hunter for Locket, wards, etc. may be better into some comps. U

se sparingly though.

Your goal during lane is to poke with Q and look to engage whenever you have strong health advantage. Save W for Q>W>E engage or to block cc for your carry. Good positioning and warding are key to making sure you succeed with this pick, as an unannounced jungler can make for bad times.

As you get gold you can start building towards your Anathema's Chains (Giant's Belt + Kindlegem) and the health from these items should help keep you topped up to stay in lane, as you arre looking to hit 6 pretty early if possible.

Once you hit 6 you should be roaming around the map setting up vision and looking to gank vulnerable lanes to help snowball the game. You can use R from quite a distance to allow for good gank setup, or walk in with full combo if they are overextended.

Your true power comes in teamfights, so be looking to roam with your team and fight over objectives whenever possible.

During mid-game you should be looking to complete your mythic (aim to complete by level 11) and wardstone (by 13) to stay useful to your team.

Your final item can really be any number of things, but in general you are looking to sustain yourself (Force of Nature, Thornmail, etc.) buff up or protect your carries (Knight's Vow, Zeke's Convergence, Abyssal Mask, etc.) or to impede enemy carries (Randuin's Omen, Frozen heart etc.) It's hard to make a "wrong choice" here, but think about what your team really needs.