At 5th level, you can use your bestow insight ability 2 additional times per long rest. This increases to 3 additional times per long rest at 7th level.
At 5th druid level gain proficiency with perception, insight, or investigation, or gain expertise if already proficient, or choose an upgrade if already expert in the corresponding skill:
Perception - Choose one:
Gain 60 feet of darkvision.
Gain a +1 to perception checks made to perceive magic.
You can spend a use of bestow insight to remove disadvantage on an attack.
Insight - gain a +2 bonus to all checks made to identify and save against illusions and enchantment magic.
Investigation - Choose two:
Gain a +2 to checks made to understand mechanisms.
Gain a +2 to checks made to understand nature.
Gain a +2 to checks made to understand or decipher maps and documents.
Gain a +2 to checks made to detect traps.
You can spend 1 use of bestow insight to gain a +2 bonus to a wisdom or intelligence check.
At 6th druid level, choose an omen for your Mysticism, gaining associated abilities:
Good - You druid mysticism ability's upper refund range is extended by 1, effectively refunding a rest dice on a natural 19 alongside a natural 1 or 20. Learn a divination cantrip of your choice, and gain proficiency with one of: light shields, light armor, a martial weapon group, or simple bows and simple crossbows
Bad - You druid mysticism ability's lower refund range is extended by 1, effectively refunding a rest dice on a natural 2 alongside a natural 1 or 20. Learn a necromancy, transmutation, or evocation cantrip, and gain proficiency with a weapon group of your choice.
Doubt - Your druid mysticism ability now also refunds rest dice if the rolled result was either mid-value of the dice. Learn an oath or arcane cantrip of choice. Once per long rest, you can spend a use of bestow insight to counter an effect that would either cause you or an ally within sight to reroll their dice, or alter the bonuses of a roll.
Silence - You can use mysticism to cause a creature within range to reroll all damage dice, potentially even altering an ability or spell. When doing so, no rest dice are refunded. Gain proficiency with a skill of your choice and gain a feat.
At 7th druid level, whenever you use bestow insight, you regain 1d12 health.
At 7th druid level, choose an upgrade:
Your HP maximum is increased by 7 and you gain an extra death save.
Your rest dice maximum is increased by 1.
You gain 3 levels of extra spell slots that can be spent to cast any spells you know. The levels can be split up as you wish.
Gain proficiency with a save of your choice.
Gain a +1 bonus to wisdom.
At 8th druid level you are immune to charm, compulsion, and sleep effects.
At 8th druid level choose an ability:
Breath of life - You can revive an intact recently deceased creature that is up to one size category larger than you as a full round action. Doing so costs a failed death save.
Quiet magic - You can dispel all magic of choice within a 30 ft radius as an action. If the magic is permanent or ongoing, it is instead suppressed for 1 hour. Doing so costs 3 rest dice.
Guardian runes - You can ignore the concentration component of a beneficial spell cast on an ally. You can do so twice per rest.
Curse breaker - You can remove a curse or disease effect from an ally by spending 3 rest dice during a rest.
Life runes - You can spend 2 rest dice during a rest to heal 2d12 health to a creature and regenerating a lost limb or bodypart.