Chromie
Chromie is a 6 Mana Cost Legendary Neutral Minion card from the Across the Timeways set!
Card Text
Deathrattle: Draw another copy of cards you've played this game.
Flavor Text
Chromie searched far and wide, but there just wasn’t a group of heroes with the strength to take down Murozond. In this timeline, at least…- Mana Cost: 6
- Attack: 4
- Health: 6
- Crafting Cost: 1600 / 3200 (Golden)
- Arcane Dust Gained: 400 / 1600 (Golden)
- Rarity: Legendary
- Class: Neutral
- Card Type: Minion
- Set: Across the Timeways
- Mechanics: Deathrattle, Draw Cards

Hmm. Can be used to immediately render a non-highlander deck to a secret highlander deck (for Reno Jackson and Zephrys).
I might not be understanding, but I don’t think it would help with removing duplicates?
It only draws the second copy of cards you’ve already played the first copy of.
So if both copies are still in your deck, and haven’t been played, it won’t draw it.
And if you already played 1 of the 2 copies, drawing the second copy isn’t required to enable Reno cards I think
Some Reno cards require you to start your deck with duplicates. With Chromie, you could have only a few cards with duplicates, like Devolve or Revolve for Shaman to counter Quest Murlocs; so by the time you play Chromie, you’ve probably played the first copy of those few duplicated cards, i.e. finessing your deck into no duplicates for Zephrys the Great, Reno Jackson, etc. that only require the deck as is to have no duplicates.