Changes made:
Maniac: "When you gain or trash this, if you have Gullible or Paranoid, flip it over; otherwise, take Paranoid." -> "When you gain or trash this, if you have Gullible or Paranoid, flip it over; otherwise, take Gullible."
Companion: "Exchange this for a Toy. If you did, take Loyal, Friendly, or Naive." -> "Trash this. If you did, take Loyal, Friendly, or Naive."
Toy: Action - $1: +1 Card, +1 Action | While this is in play, when you gain a Companion, you may exchange this for a Companion (This is not in the Supply.)
Elixir: "$2. Gain a Gold." -> "$3, +1 Buy. Gain a Gold."
Hunted: "During your turns, if you do not have an Elixir in play, Treasures are also Actions that have no effect when played in the Buy phase." -> "During your turns, if you do not have an Elixir in play, Treasures are also Actions that give +$1 instead of their instructions when played in the Buy phase."
Knight Errant: "+$3. Each player (including you) reveals and discards the top 2 cards of their deck and gains a copy of a card they revealed costing from $3 to $6 that you choose." -> "+$3. Each player (including you) reveals and discards the top 3 cards of their deck and gains a copy of a card they revealed costing from $3 to $6 that you choose."
Slaughterhouse: "Trash a card from your hand. If it's an Action, +4 Cards and +1 Action. Otherwise, gain a Sheep." -> "Trash a card from your hand. If it's an Action, +4 Cards and +2 Actions. Otherwise, gain a Sheep."
Invade: "Trash any number of Duchies and Provinces from your hand. Gain a Province per card trashed." -> "Once per turn: trash up to 2 Duchies and/orProvinces from your hand. Gain a Province per card trashed."