Shaman

This Ranger subclass focusses more on spellcasting. it is almost a druid but with a ranger flavour

Magic of the Wilds

At 3rd level, you gain acces to the druid spell list. whenever you gain another spell you may choose a spell from the ranger or druid spell list. Spells from the druid spell list count as Ranger spells for you.

In addition. Whenever you finish a long rest you can meditate for one minute on the forces of nature. Choose a spell from the ranger or druid spell list. You imbue a natural object, druidic focus or a weapon you are proficient with with Nature magic. Until you finish a long rest you can cast the chosen spell once without expending a spell slot. You can also expend a spell slot to cast the spell as normal.

Mark of Nature

At 7th level, once per turn, when you hit a creature that is affected by one of your consentration spells with an attack, choose one:

-You can deal an aditional 1D8 force damage to that creature. 

-The creature has disadvantage on the next saving throw it makes to end the effect of your consentration spell.

Wild Focus

At 11th level, You can cast a second consentration spell while already concentrating on a first spell, as long as both spells are Ranger or Druid spells. If you need to make a Constitution Saving Throw to maintain your consentration and you fail the save, you lose consentration on both spells. 

Nature's Champion

At 15th level you connect to a spirit of nature to gain acces to a powerful spell. Whenever you finish a long rest you can spend a minute meditating and choose a ranger or druid spell. The spell can be of a level that is one higher than the highest level ranger spell slot you have. Until you finish your next long rest you can cast the spell once without spending a spell slot, calling on the spirit to lend you its power, the spirit then leaves after the spell ends.