Opuntia monacantha f. monstruosa variegata - Joseph's Coat
These are darling lime green cacti. They are covered in small prickly pink thorns. They will look wonderful in an arrangement or on their own for minimalist look.
Your plant will be similar to the one in the photos.
Part to full sun
Let dry between watering, water deeply
Use fast draining soil
Ships in a plastic pot with soil.