Hades has an effect that also works like Let it Go, sending chosen characters to the Inkwell, while Belle has perhaps the most broken ability of all in this deck once per turn she can actually send one card to the Inkwell
Tarkir: Dragonstorm - Play Booster Case contains
Alpharael, Stonechosen The mythic rare Alpharael isnt unlike Heartless Hidetsugu
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
Enchantments like Reconnaissance Mission and Bident of Thassa can completely refill your hand after just one combat step, and the Bident can force an opponent into an awkward attack
You sacrifice Mishras Bauble to put it into the graveyard, then sacrifice Myr Retriever using Blasting Station