Er...
There's no symbol next to the item in the Direct, what makes you think it's a Pokémon item? Aidan, the College-Bound Rurouni 12:45, 15 June 2018 (EDT)
Update Needed
So, after observing footage of the Healing Field mostly Nintendo Treehouse Live, I am almost certain it heals 1.0 damage every 1 second (sixty frames I think). However I didnn't actually add it to the page due to not being absolutely completely sure. Can someone confirm this? I was on [this page]. In the Inkling 4P match, there is clear footage of the Healing Field. 72.133.91.93 09:10, 23 July 2018 (EDT)Blueflame105