Expedition Aggro/Combo Dragon Mastery Deck. (Shout out to countinghosts for playing me in expedition. I asked him for his list and tweaked it a bit)
I recently got to Masters with this Deck (10/13/19). Seems like the ranked ladder has some problems playing against Aggro decks.
Game plan TLDR: enable Mastery with
Jack's Knife and use
Dragon Forge to tutor for it.
Jack's Knife +
Akko, Inspired Artist: These cards give you an instant 4/5 unit. 2 battles is enough to trigger Akko's mastery. When this goes off early T2/T3 usually the opponent just concedes even if you don't have advantage. Note after this triggers your
Jack's Knifes in your deck are 1 power +6/+4 weapons.
Jack's Knife +
Teething Whelp: This becomes a 4/4 flyer that when connects with the opponent becomes a 7/7 flyer. This is game winning on turn 3.
Jack's Knife +
Varret, Hero-in-Training: Varret becomes a 4/5 unit when equipped with Jacks knife. When using mastery prefer giving Varret aegis. With the Jack's knife equipped he's a 6/6 Aegis which can come out turn 3.
Jack's Knife +
Cozin Darkheart: One battle with this Unit enables Cosin and gives you a 4/4 dragon and a
Treasure Trove.
Voprex's Choice: This can pull a
Jack's Knife, a
Teething Whelp or the 5/5 lifestealing dragon that comes from
Fell Ritual. Also, one of the efficient pieces of removal in Expedition. It can handle lone units with Aegis.
Cen Wastes Smuggler: I pull out
Combust when I need removal else I tend to favor
Kaleb's Persuader because it helps enable mastery and also helps fish power out of the deck (the deck only has 25 power).
This deck has a super low curve and you usually won't get above 4/5 power when playing. Favor an aggressive play style and leveling up units whenever possible.