This is a medusa type euphorbia, they have a central stem with lots of long stems arching up around it. They like to be planted deeply (deeper than what you see in my photo). There are no spines and no leaves. Euphorbias like to be slightly wetter than other succulents.
Your plant will be similar to the one in the photos.
Part sun, protect from hot afternoon sun
Let dry between watering, water deeply
Vivid Root 30% Soil Mix or similar
shown in 4.5" pot
Ships bare root. Pot and soil not included.