Reliquary Reincarnations

Reliquary is a collection of magical items and blocks that may be challenging to get, but make player's life easier in many different areas

There is a lot more information on the mod's wiki, but just briefly these are a few of the most notable things included in the mod.

Some of the items and blocks:

Coin of Fortune - magnet that teleports items and experience to player
Hunter's Handgun - handgun that can be loaded with a variety of different shots (like shots that seek their target, or make creepers explode, ...)
Infernal Chalice - a portable lava storage, but also an item that prevents the player from being hurt in lava (in exchange for some hunger)
Interdiction Torch - torch that pushes mobs in its range away
Lilypad of Fertility - lilypad that makes nearby crops grow faster and that can be put side by side with other lilypads for even greated effect
Mob Charms - item that makes mobs ignore player (each of them specific to a mob type - Creeper Mob Charm, Zombie Mob Charm, ...)
Sojourner's Staff - staff that can hold multiple stacks of torches and then place these in world, close to the player as usual or even at great distance for additional cost
Void Tear - item that can hold a huge number of stacks of a specific item (no more cobble clutter)
Witherless Rose - flower that prevents player who has it in their inventory from being withered

Pedestal

Pedestal can be used as a fancy display of items, but at the same time it is functional as well when you put some specific items in

• Picks up items and xp orbs - coin of fortune
• Works as a tank for xp - hero's medallion (charges the medallion with the xp)
• Attacks mobs - sword (many different kinds work including Tinker's)
• Gets milk from cows or picks up liquid from the world around - bucket
• Shears sheep or shearable blocks - shears
• Buffs players within range with localized creative flight - Rending Gale in flight mode
• Pushes/pulls mobs in range - Rending Gale in appropriate mode
• Works as an automated farm - Harvest Rod

Tome of Alkahestry

allows duplicating some items for a cost of its charge. By default there are not that many but include even some pretty expensive stuff like diamond or nether star (of course for a cost that's appropriate to those).

Potion system

Reliquary includes custom potion system that allows creating a lot of different kinds of potions. It uses some very basic ingredients like potatos up to very expensive ones like nether stars and the resulting potions have appropriately strong effect(s). Wiki has way more information on how exactly this works and all of the different ingredients and effects.

Note for modpack developers: There is a lot of configuration options in this mod so you can customize how stuff works quite a bit. All of the configuration options are available in the in-game mod configuration. The included description for the options should hopefully be very explanatory.

Credit goes to X3n0ph0b3 and TheMike for coming up with ideas and creating/maintaining this mod until 1.7.10