If you would receive a rare when you already possess four of every rare from that set, youll get 20 gems instead, or 40 gems for a mythic
Jhoira is massively good
More aggressive spellslinger decks benefit from cards that deal damage whenever you cast your spells
Combo strategies that depend on synergy will see their win rate tank as they have to discard a card every turn, losing the chance to combo off

Abaddon the Despoiler Annoyed Altisaur Apex Devastator Ardent Plea Aurora Phoenix Averna, the Chaos Bloom Bigger on the Inside Bituminous Blast Bloodbraid Challenger Bloodbraid Elf Bloodbraid Marauder Boarding Party Call Forth the Tempest Captured Sunlight Cascade Seer Dark Apostle Demonic Dread Deny Reality Dreamroot Cascade Enigma Sphinx Enlisted Wurm Etherium-Horn Sorcerer Ethersworn Sphinx Flamekin Herald Forceful Denial Garbage Elemental Heralds of Tzeentch Imoti, Celebrant of Bounty Ingenuity Engine Into the Time Vortex Kathari Remnant Let the Galaxy Burn Maelstrom Colossus Maelstrom Nexus Maelstrom Wanderer Meteoric Mace Natural Reclamation Noise Marine Quandrix, the Proof Rain of Riches Sakashima's Protege Shardless Agent Skyline Cascade Sloppity Bilepiper Smoldering Stagecoach Stormcaller's Boon Sweet-Gum Recluse TARDIS TARDIS Bay The First Doctor The First Sliver Throes of Chaos Violent Outburst Volcanic Torrent Wild-Magic Sorcerer Wildsear, Scouring Maw Yidris, Maelstrom Wielder Zhulodok, Void Gorger

CBC will very likely double the money, which is perfectly fair