Absorbtionless - You won't get absorption from golden apples or golden heads.

Anonymous - All players are anonymous. You won't know who anyone is.

Backpack - Your team gets a shared inventory.

Bald Chickens - Chickens don't always drop feathers, skeletons always drop 3-5 arrows

Barebones - All ores (excluding coal) will drop an iron ingot. You cannot craft enchantment tables, anvils, or golden apples. Upon killing a player, they will drop 1 golden apple, 32 arrows, 1 diamond, and 2 string.

Battery and Assault - One player can only use a sword, one player can only use a bow

Battery and Assault Cycle - Every minute the combat style changes from Melee, Bow, and iPvP (No sword or bow)

Beta Zombies - Instead of dropping rotten flesh, zombies drop 0-2 feathers.

Bleeding Sweets - When a player dies, they will drop a diamond, 5 gold, a book, a piece of string and 16 arrows.

Blood Diamond - Mining a diamond will make you take half a heart of damage.

Blood Enchant - You will lose a half a heart for every level you use enchanting.

Bowless - Bows cannot be crafted and mobs will not drop bows.

Cold Weapons - You cannot enchant items with fire aspect or flame.

Cupid - When you shoot and hit a player with an arrow, you will gain 1% of your max health back.

Cutclean - All ores and food are dropped in their smelted form. Flint/Leather/Feather drop rates are 100%.

Diamondless - You cannot mine diamonds, but every time you kill a player, they will drop 1 diamond.

Double Ores - All ores drop 2x the amount they'd normally drop.

Double Hearts - Players start with 2 rows of hearts

Do Not Desturb - Get 30 seconds of assigned fights after hitting a player

Easy Book - Get a random book at the start of a game

Eggs - When you throw an egg, it spawns a random mob

Enchanted Death - Enchantment tables are not craftable and are dropped on player death.

Enchanted Flower Power - Break a flower to gain a random item (tools, armour, weapons are given random enchants)

Extreme Sky High - Once PvP starts, you will take 2 hearts of damage every 30 seconds, you have to be up at Y=200

Fast Getaway - You receive 45 seconds of Speed 2 upon killing a player.

Fireless - No fire damage or lava damage in the overworld (you will take fire damage in the nether).

Flower Power - Break a flower to gain a random item

Golden Retriever - Players will drop a golden head instead of a regular head upon death.

Goldless - Gold cannot be mined, but every time you kill a player, they'll drop a golden head and 8 gold ingots.

Gone Fishing - You are given 20,000 XP levels, 64 anvils, a Luck of the Sea 250, Unbreaking 100 fishing rod. You cannot craft an enchantment table.

Guns and Roses - When you break a flower you get 1 arrow,

Hastey Boys - All crafted tools are enchanted with Efficiency 3.

Horseless - You cannot tame horses or donkeys.

Infinite Enchanter - You are given 20,000 XP levels, 64 anvils, 64 enchantment tables and 2 stacks of bookshelves.

Love At First Sight - You are solo until you find another player

Long Shot - Bow shots give effects based on distance (50+ - Speed 2 for 15 seconds) (75+ - Regen 1 for 5 seconds)

Lucky Leaves - There is a small chance that you can get a golden apple everytime you break a leaf.

Moles - One person on each team becomes a mole, the job of the mole is to betray their team and win with their mole team

No Clean - You receive 20 seconds of invincibility upon killing a player.

No Fall - Fall damage is disabled.

Rush - Final heal is at 5 minutes, PvP enables at 10 minutes, and the border will begin to shrink at 25 minutes.

Random Teams - Teams are randomly assigned

Safe Loot - Upon killing a player, all of their items will spawn in a chest. This chest is protected so that only you can access it for 30 seconds.

Sky High - If you are below y100 after pvp enables, you will take half a heart of damage every 30 seconds.

Sky Battles - Grace period will end at 30 mins. If you are below y100 after pvp enables, you will take 1 heart of damage every 10 seconds. You cannot build above y100 until grace period ends.

Statless - Stats are disabled for the game.

Stock Up - After every kill, you get 1 empty heart

Superheroes - When pvp enables, all players will be given permanent effect(s). The possible list of effects are as follows:
Strength, Jump Boost 4, Health Boost (20 Hearts), Speed 2 + Haste 2, Saturation 10 + Haste 2, or Fire Resistance + Resistance 2.

Super Superheros - Each player gets lots of potion effects at the start of the game

Switcheroo - When you shoot someone with a bow, you swap locations

Timber - Breaking a log will make the rest of tree come down with it.

Timebomb - Upon killing a player, all of their items will spawn in a chest. After 30 seconds, the chest will explode.

Triple Ores - All ores drop 3x more the amount they'd normally drop.