Disclaimer: I don't think there is any one 'correct' way to play a champion, all of this is based off my personal experience experimenting with builds on ww and what I found to work best for me. There are so many possibilities considering runes, item choice, and play style, so what works for me might not work for others, and that's okay! My goal is simply to share what I've found to work for me when playing ww (for the most part lol), and hopefully this guide will find its' way to someone else who likes it! Criticism and feedback is also always welcome, as I am open to trying new things in terms of runes and builds. Anyway, I hope you enjoy this guide and find it useful in some way :)

Okay, here's what I was thinking. IN THEORY, the idea of this build was "what if warwick could not only heal himself while in teamfights, but could also heal his teammates as well?".

Warwick's Q, which is the main ability he heals from, scales with AP. Both the amount of damage his Q does and the amount of health he recovers from it scale with AP, so building AP on Warwick can actually be really good. Moonstone, being an AP item, would therefore not be all too bad a choice for a mythic, considering that you build AP items that focus more on damage following it (I put together a 'healer' build that consists of support items but I don't think it works and I'm too scared to try it lmao).

-AP ww does lots of damage and heals a lot with Q, making him very hard to kill
-heal your teammates as well as yourself during ganks and teamfights
-omg so much healing wtf

-Moonstone doesn't offer much damage compared to other AP mythics like Night harvester or Riftmaker, which are the usual go to mythics for AP Warwick
-build ONLY works well when fighting with your team, you will not do well in solo fights
-people will 100% think you're trolling and get tilted