You've got several ways of making those merfolk unblockable (such as Rogue's Passage), and plenty of ways to break a stale board state in Curse of the Swine and Wave Goodbye
We have a four-mana kill spell in mono-Green (assuming you do it correctly, of course), then it pumps something, then it resurrects that same huge thing we used to kill the other thing
Shinx S 240/190 I put it in the sleeve right after opening the package, so I think it is almost flawless, though it is a layman's view
Shallow starter sets and a lack of availability meant that the initial decks I picked up were shelved for months
Katara, the Fearless This Bant three-drop also Human Warrior Ally with 3/3 lady is next
(It's an artifact with ", Sacrifice this token: Add one mana of any color.") Other creatures you control enter with an additional +1/+1 counter on them for each mana from a Treasure spent to cast them