I main mono-purple and I do have to say the recent Terragon, Racer in Shadow, and Sword Saint nerf was devastating. Despite that, mono-purple gained some buffs especially the Thriving Shade stat buff. She has become an auto include in my decks now. Here is what has been consistent to me so far after many ranked games with mono-purple this season.
Combos with the deck:
Re:Spawn + Thriving Shade or Vixen:
Shinobi of Smoke + Hotel Barkeep:
Nine-tailed Vixen + Shinobi of Smoke and Thriving Shade:
Thriving Shade + Spiteful Mimic:
Jin-Sook Doll, Dollmaster + Perfect Grade, Master of Shadows, or Pentacle of Flavors:
Merciless Koxinga + Racer in Shadow:
Items:
Strength:
This deck's strategy is to play slowly until you end up exhausting their resources or overpower them which you then push for the win. The core offensive card of this deck revolves around Thriving Shade as it will be the earliest major threat to your opponent. Putting your opponent in a situation where they either need to stop the +2/+2 or leave it be just in case its a Spiteful Mimic is a great tool to attract opponent removal and minions. If they do end up using removal on it, that's one less removal spell to worry about. Shinobi of Smoke is useful for sniping or maintaining control of the board. Vixen can recycle them back for even more pressure which also directly reduces the number of removal spells they have which sets you up for a higher chance of safely playing expensive Mythic minions to push for the win.
Flexibility of the Mythic Cards
Perfect Grade = single and multi removal
Weakness:
Aggro decks are going to be able to disrupt the stealth quite easily and have a higher chance of taking board control before you. Purple is inherently weak against aggro because they have conditional multi-removal such as needing a minion in order to use Pentacle of Flavors as opposed to a Thunderclap. Ways I found to combat this is with Battle Chef's item and Re:Spawn as they will help your minions stick to the board.
Impel is quite expensive because of the recent nerf it received but that is why we have Hotel Barkeep.