So you want to play elements. Fan of mastery? Me too! With elemental mastery, you get double the coin! Unfortunately, earning mastery sometimes means making your deck slower. What follows is the fastest possible deck that still gets masteries.
The best speed mastery deck is a dark mark deck, with more than 50% darkness cards (even with variants, 50% darkness is used), so start out by choosing darkness.
Your starter will look like this:
You're going to want to sell these cards...
2 x quantum pillars
1 x black dragon
1 x devourer
3 x parasite
1 x drain life
4 x aether pillar
1 x spark
1 x lightning
1 x parallel universe
1 x immortal
...and replace them with these cards...
6 x minor vampire
...to make it look like this:
Go beat a level 0. You should get mastery. Collect the first three quests.
Sell these cards...
1 x quantum pillar
1 x dagger
3 x devourer
3 x obsidian pillar
...and replace them with these cards...
5 x emerald pillar
3 x adreanline
...to make it look like this:
This deck should be good enough to easily beat levels 1-3, and even master 1-2. Mastering level 3 is possible on a good draw. Either way, fight each level and complete your quests.
Sell these cards...
4 x obsidian tower
1 x dusk mantle
...and replace them with these cards...
3 x adrenaline
1 x life pillar
1 x nightfall
And you have your deck:
Hover over cards for details, click for permalink
5bs 5bs 5bs 5bs 5bs 5bs 5c7 5c7 5c7 5c7 5c7 5c7 5uk 5uk 5uk 5uk 5uk 5up 5up 5up 5uq 5uq 5us 5us 5ut 5ut 5ut 5ut 5ut 5ut 8pt
QI = 64/11 = 5.818181....
Why is this the best speed deck for masteries?
Because in your average game you can deal, and heal, 36 damage per turn. If you know how to use your drain life effectively, you can easily master level 3s 9 times out of 10. If you want to improve the deck, however, this variation works well too.
Hover over cards for details, click for permalink
5bs 5bs 5bs 5bs 5bs 5bs 5c6 5c6 5c6 5c7 5c7 5c7 5c7 5c7 5c7 5uk 5uk 5uk 5uk 5uk 5up 5uq 5uq 5us 5ut 5ut 5ut 5ut 5ut 5ut 8pt
QI = 73/11 = 6.63636363...
I abandoned this deck once I could afford my rainbow, but a friend of mine on her own found this deck. Her name is Lhjnhnas. Be sure to thank her. Since the new update, Zanz fixed the vampire + EB bug, or tried to. Now, instead of healing one for each creature, EB counts hyper vampires as four creatures. Meaning that a single EB with one hyper vampire will heal you for 12! I cannot say for certain this is intended behavior, and it might be an exploit. Either way, with the decks full set up, you'll be dealing 72 damage and healing 144 life each turn. In order to achieve this, you have to sacrifice some control, which means it's a riskier bet. On the upside, the deck has 15 life cards, meaning it can be used in official play as a life deck.
There isn't a better deck in the game for easy masteries. Most that come close rely on rare cards like miracles. This deck is just as fast as an adrenaline rush deck, the third fastest deck in the game, but it's combo is harder to land. On the upside, it earns double the coin, and it's an easy deck to play. Not much thinking/clicking involved. Ai3 masteries have come as fast as 13 seconds.
Enjoy!