Current rank: Legend (from Gold with bonus stars)
The deck is built around Lorekeeper Polkelt, Reno the Relicologist, Solarian Prime and strong 5-drops. (and Zephrys the Great, of course)
Play Lorekeeper Polkelt and you will get strong turn 6 with Reno the Relicologist. In the next couple turns you will have all strongest cards in your hand.
Acidic Swamp Ooze - sometimes I see other than druid classes
Cult Neophyte - but usually I see druids - block turn 4 ramp and 7 Guardian Animals
Devolving Missiles - vs overbuffed minions
Spellbender - not only tech vs paladins. Usually stays for a couple turns and I can play Cloud Prince on 5
Also tested Bad Luck Albatross - doesn't work for me.
Climbed up to 1700 Legend with this build (from 4-5k).