Mulligans
General Mulligans
Plot Twist benefits all of the styles here considerably, so having it in hand confirms it won't be on the bottom and useless.
Augmented Elekk is definitely less needed, but Plot Twist refills being possible or tons of Portals can help.
Rafaam's needs time to upgrade in hand.
Jumbo Imp needs deaths to upgrade in hand.
Wondering if a standard Warlock deck featuring all 3 of these styles would be viable.
Darkest Hour after a Rafaam's Scheme or Fiendish Circle or even a couple successful summons via Dollmaster Dorian or Portals can lead to some nasty larger creatures or good standing effects. This is paired with Jumbo Imp, as the fodder is often Demons (see Imps or Portals) and can make for a cheap 8/8 in hand, though may be cut for a creature that doesn’t dislike being shuffled back into the deck.
Portal Warlock with Portal Keeper and Portal Overfiend can be triggered frequently off of Augmented Elekk and Plot Twist (together or separately), refilling the hand with Soup Vendor aiding the healing off of various cards included. The latter being the most likely card to be edited out, possibly for a Banker?
Plot Twist Warlock mimics the Darkest Hour value by flooding the board, but this time by summoning duplicates via Dollmaster Dorian and Fel Lord Betrug. This ideally would be done with an Augmented Elekk on board and hand with a spare Plot Twist in hand for infinite twists, even more so if The Soularium was played first for larger twists.
EDIT: Baleful Banker has replaced Soup Vendor, as the shuffle-ins can benefit my Battlecries or Darkest Hour. Mountain Giants have been added to take advantage of the card-draw, or as large bodies for Darkest Hour/Betrug.