The Official RGBlind community pack. This modpack is built for exploration and delving into the world of S.C.P. There is also in-depth crafting and magic mods. This modpack also includes portals to various different worlds with plenty of fun expansions/dungeons to explore. You can transform into what monsters you kill and ascertain their abilities. Hunt for dragons. Build the perfect weapons, armor and tools for any situation. Not only is there more items, but more blocks and customization options for furniture and building. Built in is some server related packs that make it so you have waypoints and some basic commands even if you're playing single player.
Mods included:

Just Enough Resources (JER) (by way2muchnoise)
Hwyla (by TehNut)
Project EX (by LatvianModder)
Living Enchantment (by Clownvin)
Just Enough HarvestCraft (JEHC) (by mrapplexz)
Cosmetic Armor Reworked (by LainMI)
Actually Additions (by Ellpeck)
Signpost (by Gollorum)
Morpheus (by Quetzi)
Botania (by Vazkii)
AtomicStryker's Infernal Mobs (by atomicstrykergrumpy)
IvToolkit (by Ivorforce)
Blood Smeltery (by smileycorp)
Thermal Foundation (by TeamCoFH)
Redstone Flux (by TeamCoFH)
TekTopia Information (by Bletch1971)
CoFH Core (by TeamCoFH)
Ender Storage 1.8.+ (by covers1624)
FTB Guides (Forge) (by FTB)
Just Enough Torches (by HeckinChloe)
Waystones (by BlayTheNinth)
CoFH World (by TeamCoFH)
The Erebus (by vadis365)
Placebo (by Shadows_of_Fire)
FTB Ultimine (Forge) (by FTB)
iChunUtil (by ohaiiChun)
Reliquary v1.3 (by P3pp3rF1y)
Integrated Dynamics (by kroeser)
Hats (by ohaiiChun)
BaublesHud (by GigaBit101)
Morph (by ohaiiChun)
Bookshelf (by DarkhaxDev)
AIOT Botania (by MelanX)
Pam's HarvestCraft (by pamharvestcraft)
LetsEncryptCraft (by CloudyPSP)
Thermal Dynamics (by TeamCoFH)
Building Gadgets (by Direwolf20)
Waila Harvestability (by squeek502)
Ceiling Torch (by bl4ckscor3)
Spartan Weaponry (by ObliviousSpartan)
FTB Backups (Forge) (by FTB)
AbyssalCraft (by Shinoow)
BiblioCraft (by Nuchaz)
Davincis Vessels (by darkevilmac)
Random Things (by Lumien231)
Ender Zoo (by idontwantthisaccount4)
Chisel (by tterrag1098)
JEI Integration (by SnowShock35)
Wawla - What Are We Looking At (by DarkhaxDev)
Additional Structures (by XxRexRaptorxX)
ConnectedTexturesMod (by tterrag1098)
Tropicraft (by Cojomax99)
Common Capabilities (by kroeser)
ProjectE (by SinKillerJ)
Construct's Armory (by TheIllusiveC4)
Torchmaster (by xalcon)
Traveler's Backpack (by Tiviacz1337)
Mantle (by mDiyo)
Trinkets and Baubles (by XzeroAir)
Inventory Tweaks [1.12 only] (by JimeoWan)
MrCrayfish's Furniture Mod (by MrCrayfish)
Tinkers' Tool Leveling (by bonusboni)
Chunk Animator (by Lumien231)
Blood Magic (by WayofTime)
Enchantment Descriptions (by DarkhaxDev)
FTB Quests (Forge) (by FTB)
EMC Baubles (by JPAN_v2)
SwingThroughGrass (by exidex)
Torch Optimizer (by Kreezxil)
Recurrent Complex (by Ivorforce)
AbyssalCraft Integration (by Shinoow)
FastWorkbench (by Shadows_of_Fire)
AppleSkin (by squeek502)
Enchanting Plus (by DarkhaxDev)
bspkrsCore Updated (by ZenCoder)
FTB Utilities (Forge) (by FTB)
Fast Leaf Decay (by olafskiii)
The Twilight Forest (by Benimatic)
Just Enough Items (JEI) (by mezz)
Baubles (by Azanor13)
SCP XK Scenario (by Icerysky)
Iron Chests (by ProgWML6)
Treecapitator Updated (by ZenCoder)
BetterFps (by Guichaguri)
Mutant Beasts (by Chumbanotz)
Atlas Lib (by smileycorp)
Mowzie's Mobs (by bobmowzie)
SCP: Lockdown Additions (by enzo7098631)
Patchouli (by Vazkii)
Aquaculture 2 (by Shadowclaimer)
FastFurnace (by Shadows_of_Fire)
Artifacts (by ochotonida)
FTB Library (Forge) (Legacy) (by FTB)
SCP: Lockdown (by commander_wasp)
LLibrary (by _ForgeUser11902522)
SCP Lockdown: Zera's SCPs (by thethirdeye27)
Blood Arsenal (by Arcaratus)
Inventory Pets (by Purplicious_Cow_)
MovingWorld (by darkevilmac)
Roguelike Dungeons (by Greymerk)
Dark Utilities (by DarkhaxDev)
SCP Lockdown Extras (by fluffydoggoofficial)
Guide-API (by TehNut)
Extra Golems (by skyjay1)
Tomb Many Graves 2 (by M4thG33k)
SCP: Lockdown Heavy Containment Zone Expansion (by scootyboooooty)
Level Up! Reloaded (by BeetoGuy)
Cyclops Core (by kroeser)
Mouse Tweaks (by YaLTeR)
FTB Money (Forge) (by FTB)
Extra Spells (Electroblob's Wizardry) (by meldexun)
Clumps (by Jaredlll08)
TekTopia (by TangoTek)
Actually Baubles (by Jackyy)
Heroic Armory (by skeddles)
Electroblob's Wizardry (by Electroblob)
ChinjufuMod +JapaneseBlock (by 鮎滝渉)
Bed Bugs (by gr8pefish)
JustEnoughIDs (by Runemoro)
CodeChicken Lib 1.8.+ (by covers1624)
JourneyMap (by techbrew)
Nature's Compass (by Chaosyr)
Ancient Spellcraft (by windanesz)
Neat (by Vazkii)
Item Filters (Forge) (by LatvianModder)
Tinkers Construct (by mDiyo)

RGBlind Pack

AbyssalCraft

AbyssalCraft Integration

Actually Additions

Actually Baubles

Additional Structures

AIOT Botania

Ancient Spellcraft

AppleSkin

Aquaculture 2

Artifacts

Atlas Lib

AtomicStryker's Infernal Mobs

Baubles

BaublesHud

Bed Bugs

BetterFps

BiblioCraft

Blood Arsenal

Blood Magic

Blood Smeltery