KeyEffects is a simple modification that adds new keybindings. Therewith you can give yourself effects or execute options like set your gamemode to creative or survival.
List of Keybindings
Preset:
NUM_0: Clear all Effects
NUM_1: Speed III
NUM_2: Jumpboost
NUM_3: Night vision
NUM_4: Strenght
NUM_5: Godmode (Resistence as hight that you don't die)
NUM_6: Waterbreathing
NUM_7: Invisibility
NUM_8: Absorption
NUM_9: Saturation
NUM_ADD: Gamemode Creative
NUM_SUB: Gamemode Survival
NUM_MULTIPLY: Gamemode Spectator
NUM_ENTER: Time set Day
Not-Defined:
NONE: Give Commandblock
NONE: Clear Inventory
NONE: Set Spawnpoint
NONE: A little Surprise for you ;)
NONE: Time set Night
NONE: Weather sunny
NONE: Playsound: Good
NONE: Playsound: Bad
NONE: Give Killer Sword
NONE: Redstoner preset (gives you basic items and blocks to build redstone circuits)
NONE: Fighter preset
NONE: Miner preset
NONE: Spawn Herobrine
NONE: Spawn Iron Golems
NONE: Clear all (clear inventory, effects and weather)
You can define this under "Controls" > "KeyEffects"