Boss Battles

General information

 * Patch 1.79 added regular weekly boss battles (they reuse some bosses so new players have a chance to fight against them too) which offer one Core orb and a boss crate as a free rewards.
 * Bosses vary in difficulty, but in general it's possible to beat them using basic and common cards (although this might require skill and multiple attempts). Of course it's better to try and design a deck working around their abilities and exploiting their weaknesses.
 * There is no time limit in Boss Battles.


 * Here is a video playlist with every Boss Battle made by Collazo.


 * You can find a discussion with the devs about the design ideas of the boss battles here.
 * Dev talk #6 was about boss battles and a summary can be found here.
 * Patch 1.96 in May 2018 introduced Bloodbound Spells for Bosses in order to "patch up weaknesses in a boss fight and thus provide either much-needed utility or removal".

Assorted tips against Bosses
Bosses are all very different, and often require completely different strategies. Look at a specific boss' article to find advice on how to beat them best. But here are a few general strategies about boss battles collected from various experienced players.


 * Try Abyssian swarm, the Bosses do not play well against Deathwatch (Shadow Watcher, Shadowdancer)
 * Magmar Grow decks are also often a valid option (Gargantuan Growth, Juggernaut, Gigaloth being the epitome of Boss crushers)
 * Trial decks can also fare well, often overwhelming Bosses in the late game (Underlord Xor'Xuul, Grand Strategos)
 * Bosses do not play around Shadow Creep and decks using it can be quite efficient

Boss decks usually don't run a lot of removal, meaning your big threats have a good chance to generate advantage.

Boss AI has specific quirks, limitations or bugs that you can exploit
 * They will often chase minions over hitting your General (Gor, spreading minions around)
 * Bosses use their own attack aggressively, until they have less than 10 health (take advantage of this with Earth Sister Taygete, Wild Tahr, Crimson Oculus)
 * They do not play around Thunderhorn.
 * A bug will prevent them to deal with Sarlac the Eternal (they get close to it but never attack it, and wait there doing nothing).

For the most aggressive Bosses, the early game can be tricky. Plasma Storm and other mass removal spells can help a lot, along with body blockers and healing (Rescue-RX, Azure Herald, other Build minions...)