ManuS86's SkyCrag Aggro

100% winrate up to Gold I. Then slightly lower winrate, but very consistently performing.

It took me to Diamond III.

Reference:
https://www.reddit.com/r/EternalCardGame/comments/6cvxfx/it_so_happens_that_i_managed_to_discover_another/

Edit: I see a downvote. Please keep in mind this deck was released on May 23, 2017, long before SkyCrag Aggro was a classical thing. The patch was v1.20 - Distant Lands at that time.