Here are some examples of how likely various cards are to be approved based on some informal polls I ran
Karazikar is a powerful beholder who appears in the Out of the Abyss adventure, trying to seize the powerful reality-warping abilities of the Maze Engine
I really like that the designers move into some undiscovered territory in this set
My First Chaos Deck "Chaos Deck" Creatures (6) 1 Arbiter of Knollridge 1 Dragonlair spider 1 Mnemonic Wall 1 Wandering Eye 1 Whirlpool Rider 1 Horobi, Death's Wail Spells (32) 1 Congregation at Dawn 1 Sundering Growth 1 Beast Hunt 1 Breath of Life 1 Chill of Foreboding 1 Conqueror's Pledge 1 Explosive Vegetation 1 Hellion Eruption 1 Hunters' Feast 1 Innocent Blood 1 Lead the Stampede 1 Living Death 1 Make a Wish 1 Mass Polymorph 1 Minds Aglow 1 Molten Psyche 1 Planar Cleansing 1 Pyroclasm 1 Restore Balance 1 Spider Spawning 1 Stronghold Discipline 1 Sway of the Stars 1 Time Reversal 1 Violent Ultimatum 1 Feudkiller's Verdict 1 Death's Presence 1 Excavation 1 Field of Souls 1 Infernal Tribute 1 Shared Fate 1 Vigil for the Lost 1 Angel's Trumpet Lands (1) 1 Bazaar of Wonders Goals for the Chaos Deck I have an easier time learning new formats when I have parameters to work within

Jumpstart (for beginners) The team behind the set opted to focus on a bigger-friendly product over precon decks, but some of these Jumpstart cards are mighty powerful and may ultimately show up in your Commander decks or even leading the charge
With all of the money thats at stake now with the Pro Tour and other tournaments around the world, they are very careful not to allow the same game-breaking mistakes to creep into the game again