You can obtain the Voltorb (1-Diamond rarity) card by opening Shining Revelry from Shining Revelry set
Sure, you need to be playing at least two colors in your deck, but thats not a problem for tons of Commanders
You've also got a few sources of life gain (see Mask of Griselbrand, Basilisk Collar, and Blood Artist), and a few ways to wipe the board if things get out of hand (see Decree of Pain and Blasphemous Act)
You can see the full deck list under the article, the main deck has exactly 52 cards
You need to be both careful and meticulous when using Pokemon Flute because, if played poorly, it can be a boon to your opponent rather than a curse
Preventing opponents from gaining life for the rest of the game can simply shut down certain strategies in the format, so Stigma LasherStigma Lasher is an interesting "hate bear" option in aggressive and/or burn-heavy mono-red decks like Zo-Zu the PunisherZo-Zu the Punisher, Subira, Tulzidi CaravannerSubira, Tulzidi Caravanner, and Ashling the PilgrimAshling the Pilgrim
