GT New Horizons · Witchery
Witchery Altar
The Witchery Altar is a multiblock structure for providing power to potion brewing, circle rituals, and more. Build the altar by placing 6-9 individual altar blocks next to each-other in a flat 2x3-3x3 shape.
(As of version 2.8.X+ of the pack, you may place Altar blocks in a 3x3 to better center them in your builds, the extra blocks can also accept Foci upgrades as described in the section below)
A red cloth appears on top if done correctly. The altar continuously scans the area around it in a 14 block radius (cube shaped), searching for life to draw power from. The last altar block placed is the center of this range.
Right-click on a formed altar to see its current power, maximum power, and recharge rate. Place nature-themed blocks around the altar to increase its base power, and very specific catalysts/upgrades on top of the altar to multiply the power and recharge rate.
Upgrades
Specific catalysts or upgrades can be placed on top of the altar to multiply its power and recharge rate. Only one of each upgrade is allowed per altar and there can only be one of each type (ie. skull/head). All upgrades are additive with the exception of the Infinity Egg and Pentacle, which are multiplicative.
| Recharge Rate | Power Boost | Range Boost | |
| Skeleton Skull | +x1 | +x1 | |
| Wither Skeleton Skull | +x2 | +x2 | |
| Player Head | +x3 | +x3 | |
| Torch | +x1 | ||
| Candelabra | +x2 | ||
| Pentacle | x2[1] | ||
| Chalice | +x1 | ||
| Chalice (Filled) | +x2 | ||
| Arthana | +x2[2] | ||
| Infinity Egg | x10[1] | x10[1] |
Power Sources
Nature-themed blocks within altar's range contribute to the altar's base maximum power, though there is a limit to the number of blocks of each type that can contribute to the base power of an altar. For example, placing two dragon eggs near the altar is redundant because the block limit for dragon eggs is only one.
| Block | Power | Block Limit |
| Infinity Egg | 1000 | 1 |
| Dragon Egg | 250 | 1 |
| Demon Heart | 40 | 2 |
| Air | 4 | 20 |
| All Pam's crops and turnip seeds from BoP | 2 | 4 |
| Wheat crop[3] | 4 | 20 |
| Carrot crop[3] | 4 | 20 |
| Potato crop[3] | 4 | 20 |
| Melon block[3] | 4 | 20 |
| Pumpkin block | 4 | 20 |
| Vanilla flowers[4] | 4 | 30 |
| Dandelion | 4 | 30 |
| Belladonna | 4 | 20 |
| Ember moss | 4 | 20 |
| Mandrake | 4 | 20 |
| Snowbell | 4 | 20 |
| Water artichoke | 4 | 20 |
| Vanilla saplings | 4 | 20 |
| Any non-vanilla block with oreDict tag treeSapling[5] | 4 | 20 |
| Witchery saplings | 4 | 20 |
| Witchery leaves | 4 | 50 |
| Early vanilla leaves[6] | 3 | 100 |
| Late vanilla leaves[6] | 3 | 100 |
| Witchery logs | 3 | 100 |
| Any non-vanilla block with oreDict tag treeLeaves[5] | 3 | 100 |
| Tall grass/fern | 3 | 50 |
| Cactus | 3 | 50 |
| Sugar cane | 3 | 50 |
| Red mushroom | 3 | 20 |
| Brown mushroom | 3 | 20 |
| Red mushroom block | 3 | 20 |
| Brown mushroom block | 3 | 20 |
| Spanish moss | 3 | 20 |
| Wispy cotton | 3 | 20 |
| Watermelon crop[3] | 3 | 20 |
| Pumpkin crop[3] | 3 | 20 |
| Early vanilla logs[6] | 2 | 50 |
| Late vanilla logs[6] | 2 | 50 |
| Any non-vanilla block with oreDict tag treeLog[5] | 2 | 50 |
| Any non-vanilla flower[7] | 2 | 4 |
| Grass | 2 | 80 |
| Vines | 2 | 50 |
| Blood poppy | 2 | 10 |
| Critter snare | 2 | 10 |
| Glint weed | 2 | 20 |
| Grassper | 2 | 10 |
| Dirt/podzol | 1 | 80 |
| Farmland | 1 | 100 |
| Mycelium | 1 | 80 |
| Water[8] | 1 | 50 |
- ↑ 1.0 1.1 1.2 These bonuses are multiplicative.
- ↑ Only affects power distribution range, not power gathering range.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Growth stage does not affect how much power they provide to the altar
- ↑ Does not include dandelions, which have their own block limit.
- ↑ 5.0 5.1 5.2 The block limit is per-unique numeric ID, including metadata, e.g. you can use 50 logs with the same numeric ID, and mix and match logs that share that ID but have different metadata, 100 logs with different metadata but the same Numeric ID will reach the cap for that Numeric ID *Only* The limit is *not* per mod, you can use leaves with different Numeric IDs in excess of the limit of 100 from the same mod(Biomes O plenty for example has several different Numeric ID's for its leaves) and it will contribute to the altar power.
- ↑ 6.0 6.1 6.2 6.3 "Early" meaning oak, birch, spruce and jungle logs/leaves, and "late" meaning acacia and dark oak logs/leaves.
- ↑ Flowers added by Biomes O' Plenty don't work.
- ↑ Includes both flowing, as well as water source blocks.