Ars Magica 2 Wiki

A crafting altar made of stone brick and moonstone

The Crafting Altar is a multi-block structure that allows the player to create spells. More powerful spells can be created by using high-quality blocks. The altar may explode if you try to use it to create a spell with more components than can be allowed by the power given to it by the Cap Blocks and Main Blocks.


The crafting altar is a 5x5x5 structure, and the area around it must be free of obstacles (e.g. no blocks can touch the sides or roof of the altar). This rule does not apply to the base of the crafting altar, however, so it will still work when integrated into the ground.

Building Material

Building Material Amount
Main block 38
Main block stairs (same kind) 12
Cap blocks 5
Magic walls 6
Crafting altar block 1
Lectern 1
Lever 1

Main Blocks

The type of main blocks decides how powerful your altar will be. The stairs must be made of the same material. The blocks are used to build the floor, the walls and the roof of the altar.

Important: The crafting altar won't work if more than one kind of main blocks is used.

Main blocks and stairs Effects
Cobblestone +1
Wooden Planks +1
Sandstone +1
Stone Bricks +2
Bricks +2
Witchwood Planks +3 (2 in version for MC 1.7.10)
Nether Bricks +3
Quartz Blocks +3
Purpur Blocks +4 (MC 1.10.2 and later)

Cap Blocks

The type of cap blocks decides how much extra power is added to your altar. The blocks are used to build the centerpiece of the floor, and to top off the 4 corners.

Important: The crafting altar won't work if more than one kind of cap blocks are used.

Cap blocks Effects
Glass block +1
Coal block +2
Redstone block +3
Iron block +4
Lapis lazuli block +5
Gold block +6
Diamond block +7
Emerald Block +8
Moonstone block +9
Sunstone block +10


A stone brick altar with lapis lazuli caps.

  1. (bottom layer) A 5x5 layer of main blocks with a cap block in the center. 
  2. Two columns, each made of two main blocks and one magic wall in the center, on opposite sides of the altar. A lectern in one of the four corners.
  3. Repeat layer 2, use a lever instead of the lectern in another of the 4 corners.
  4. Repeat layer 2 without the lectern, add four upside down stairs facing the inside of the altar
  5. (top layer) Cap blocks on the top of the pillars, stairs on the magic walls. Stairs to connect the two pillars, facing outside, and two main blocks to fill the roof, with the crafting altar block in the center.

Note: The Arcane Compendium also has a page detailing how to create the altar for people who prefer to see how to create the altar in game.


Before creating a spell, the player has to create a recipe, craft a blank rune and a spell parchment, and gather all materials mentioned in the recipe.

Then place the spell recipe on the lectern and throw a blank rune into the center of the altar. The lectern will show you what to throw in next until spell creation is done. Just drop one item at a time, which will disappear in a sparkling effect. The last item will be a Spell Parchment. If all went well, a sound will be heard, leaving a usable spell behind.

Some spells require neutral, light, or dark etherium. Attach an Obelisk, a Celestial Prism, or a Black Aurem to the crafting altar block in the center of the roof using a crystal wrench. This allows the corresponding etherium to charge the altar. If the distance between altar and power source is more than 10 blocks, the player has to use an essence conduit in between. If enough etherium is available, the player must pull the lever on the crafting altar to use it in the crafting.

Risks with glass. But it's also the one bearing the biggest risk:

If a spell has too many effects for the altar to support, the altar will explode very violently during the spell'