It is hard to find a plant that loves full shade but Hostas have hundreds of varieties and all of them do well in full shade. They are completely deciduous in the winter so it might be prudent to plant them with evergreen ferns so there will be something to look at in the winter.
This is what happens when Hostas get too much sun.
Hostas bloom in June and July and have white or purple flowers.
They come in many sizes from the dwarf below to giants that are 3’ tall.
Hosta ‘Blue Mouse Ears’ gets 3”-6” tall.
Hosta ‘Guacamole’ reaches 3’ to the top of the flower.
Hosta ‘Stained Glass’
Hosta ‘Paul’s Glory’
Here are a few Hostas at Dawn Gardens that have lost their labels: (That’s a problem with plants that completely disappear in the winter.)