Eclipse

You cannot roll Eclipse in the normal sense: it is a Legendary aura made at Jake's Workshop, and the chat message even reads "HAS CRAFTED" instead of a roll announcement. The Sol's RNG Wiki gives the recipe as one Lunar (1 in 50,000), one Solar (1 in 50,000) and one Divinus (1 in 32). So the cost is three different auras, roughly 50,000 rolls each for the first two at 1x luck, plus a short wait for Divinus. Crafting also grants 100,032 stat, per the wiki.

It was the first craftable aura in the game and stayed the only one until Matrix : Steampunk arrived in a small update during Eon 1-2. The visual shows a solar eclipse pulsing over the head and a black and orange circular portal under the feet, similar to Diaboli but rounder, throwing off dark orange particles. The font is Fondamento.

The in-game text calls it either a miracle or a disaster, when the Moon covers the Sun. The Eclipse Device is listed as an item that uses it. 53_Axis made it.