The spell rings have been scrambled across the altar posts. Sort them by color — and watch the cobwebs, because they're hiding more rings underneath.
How the Altar Works
Read once — the rings will teach you the rest.
1.Tap any post to pick up its top ring. The post glows gold when selected.
2.Tap a second post to place it — only onto an empty post, or a post whose top ring is the same color.
3.A post seals (glows green) when it holds a full stack of one color. Sealed posts cannot be touched.
4.Cobwebbed posts are frozen and hiding extra rings beneath the web. When a completed stack lands on the post directly beside one, the web shatters and the hidden rings are revealed — adding new work to finish.