So, it occurs to me this passive is fairly useless. Warden DPS' biggest issue right now is a lack of group utility. One place DPS (particularly mag) are seeing some pain is through sustain. I think I have a little help for both issues in the form of a reworked Bond with Nature. You could remove the self-heal entirely, or just leave it as it isn't particularly good. However, I think we can highlight in-class/in-kit synergy here, how nature can both do damage or heal wounds, with the following reverse of Nature's Gift;
Bond with Nature:
When you deal damage with an Animal Companions ability, a nearby ally gains 250 Magicka or 250 Stamina, whichever resource pool is lower. This effect can occur every 1 second.
Thoughts?