Bards with an especially close tie to the natural world, greensingers are typically found in rural communities where civilization and the wilderness exist side-by-side. These bards enjoy a strong, friendly connection to nature that even some druids find difficult to comprehend. It is not at all unusual for a greensinger to have a retinue of helpful creatures assisting them with their day-to-day tasks. More powerful greensingers can call upon beasts from the wilds to defend them.
At 3rd level when you select this archetype, you become closer to the natural world. You learn the find familiar spell, which does not count against your spells known. You also gain proficiency with the Nature skill, and with scythes.
Also at level 3, all spells of the nature school count as bard spells for you.
At 6th level, creatures with the Beast type have a default attitude one step higher than normal toward you. Normallyhostile creatures will be indifferent, and creatures that would normally be indifferent are friendly. In addition, you are continuously under the effect of the speak with animals spell, and you have advantage on checks to persuade Beasts to help you with non-hazardous tasks. This effect does not emit a magic aura.
Also at 6th level, you can sing a song that heals mundane maladies. You can begin this song as an action, spending a use of your Bardic Inspiration feature. For the next hour, all non-magical diseases in creatures and vegetation within 30 feet of you are immediately cured. In addition, any withered (but not altogether dead) vegetation becomes healthy again, and creatures in the aura recover 1 level of fatigue (a creature may only receive this benefit once per day). To keep this power active, you must sing continuously, which requires concentration (per a spell) and precludes you from casting spells.
At 14th level, you can call upon nature to help you in your hour of need, and it will answer. You learn the conjure animals, conjure fey, and conjure woodland beings spells. (They do not count against your bard spells known.) You may affect twice as many of these creatures as normal with a use of your Battle Hymn.