II: Destroy all nonlegendary creatures
9) Breena, the Demagogue : Growing your army off other players attacking each other is great
Online trading sites help expand this community well beyond the confines of your LGS
You won't always be able to get both Madam Mim and Fairy Godmother to stick on the board long enough to pull this off, but with their reduced Shift cost of three and two-ink respectively, you'll likely get both of them down on the board at the same time fairly often
Its a really simple ability, but being able to consistently play a three-mana card on turn two is hard to beat in so many different formats
UB is a strange color identity for a sea creature deck, but Runo presents a fun mini-game to get it flipped, and Krothuss, Lord of the Deep is one of the best sea creature payoffs you could ask for