This card mills its controller three cards and then allows them to return a Creature or Planeswalker from their graveyard to their hand
In blue, I had this card: Unstable Mutation was a flavorful little card from Arabian Nights that let you pump up your creature at the long-term cost of it slowly weakening and dying
This puts a strict limit on what you have to work with in a game of Magic
Voltron commanders are frequently outfitted defensive apparel (Swiftfoot Boots, Robe of Stars, Champion's Helm) to keep safe from removal, but we also include Instant-speed (Sejiri Shelter // Sejiri Glacier, Slip Out the Back, Shelter) and creature-based (Koll, the Forgemaster, Selfless Samurai) backups for added insurance
Also in white, and found in the Silverquill Influence precon, you'll get Replenish, which can bring all enchantments back from the graveyard to set up a big late-game finish if you can keep Eiganjo Dynastorian around