Artifacts

Deaths Contract -> Your first Unit to die each fight gains +2/+1 permanently
Ghoul Hand -> Summoned Units gain +3/+2
Ghoul Juice -> Summoned Units double their attack but are destroyed after they attack
Rat Bait -> 3 Cost
Vampire Bats -> Your highest Attack Unit at the start of a fight gains Deathless

Units

Bustacean -> Gain Tank and 1 Counter when I'm the only Bustacean on the board. I Gain +2/+4 for every Counter
Boozt -> At the Start of a fight Linked Greeners get +2/+2 permanently
Shambler -> On End, Summon Two Zombies (+6/+6)
Bucke -> When my Barrier breaks, I gain +1/+1 permanently

Archdemon balance and more stability fixes will be coming in the next patch, then theres a surprise event on the horizon for a certain winter time festivity!