For those of you that have deleted your New Player Experience (NPE) decks, or other special pre-constructed (pre-con) decks, you may find that you needed them back at some point. Here's a quick list of all of the per-con decks that have been released for Arena.
Please let me know if there are any missing so that I can keep this list updated.
Color Challenge / Rotation Proof Mono Color Decks
Available April 2019 - June 26, 2019
Available December 2019 - Feb 11, 2020
Available for the Magic Celebrity Cup event, 7/11/19-7/18/19. More info HERE
M19 New Player Experience
Closed Beta - 7/12/19