Rarity vs
I could list every new card I love - like Alice, Growing Girl, who lends the Support keyword to your other characters and gains four lore when you reach ten strength, or Sisu, Divine Water Dragon, who allows you to draw a new card every time you quest - but in general all of the new cards in Rise of the Floodborn feel like a shift in power and ability
Sagas and dead enchantment warriors return to life with this Abzan cards triggered ability, so dont be afraid to lose them in combat
However, the abilitys wording also means you can choose one of your own characters to shuffle into your deck
Thanks to the slower nature of Commander, you should have ample time to set the combo up, as well, but it will have a smaller impact on the game thanks to having four opponents
Dont be tempted to use this early, instead leave it as the one card in hand for the win next turn