It's a small value engine, but it is definitely not among the most powerful artifacts in the game like Black Lotus, the five Moxes or Time Vault
Figure of Destiny, Ascendant Spirit, and Warden of the First Tree are all superior variants on these creatures
(If anyone wants to try coding these for Magic Set Editor, let me know so I can add a link to the script -- I don't use MSE personally, but I know there are others who would appreciate it.) The pack includes 40 PNG-format, print-resolution (300 DPI) blanks: Regular, Pendulum, Textureless (for custom textures), Textureless Pendulum, Full-Art, Pendulum Full-Art, and Anime-Style Divine-Beast/Legendary Dragon
You need a spell or ability that instructs you to sacrifice, or uses sacrifice as a cost