Ok I went through the list of known druid spells and broke them down into some categories
Buffs that could hit enemy
Mark of Spikeshell
Mark of the wild
Hearth of the wild (the +2/+2 part)
Kodo Mount
Buffs that hit friendly only
Azsharan Gardens
Earthen scales
Sow the soil
Power of the wild
Hearth of the wild (the beast part)
Pride’s Fury
Soul of the Forest
Composting
Summon minion
Living roots
Sow the Soil
Power of the wild
Thorngrowth sentries
Frostwolf kennels (does nothing if one already active)
Flipper Friends
Force of Nature
Best in Shell
Scale of Ony
Miracle Growth
Plot of Sin (new card)
Card draw/discover
Aquatic form
Capture Coldtooth mine
Living seed
Moonlit guidance
Wrath
Miracle Growth
Planted Evidence (new card)
Hero armor/attack
Pounce
Earthen scales
Feral Rage
Ramp (+CA)
Innervate
Wild Growth
Nourish
Celestrial Alignment
Direct damage, can hit face
Moonbeam
Natural causes (new card)
Direct damage, minions (including yours)
Wrath
Seaweed strike (this shouldn’t ever give you hero attack)
(there are no druid minion damage spells that only hit enemies… not in standard anyway, remember swipe?)
Other
Nightshade bud (new card)
Hedge maze (new card)
Shouldn’t be in the pool
Convoke the Spirits (new card, shouldn’t chain into itself)
Quest