The Precon List Before we talk upgrades, let's take a look at the stock list to see what we're working with: Merfolk have a relatively deep pool of cards to build with, so it's no surprise that this precon manages to fill up on its primary theme: I count 35 Merfolk creatures and 6 more cards that reward you for playing Merfolk such as Deeproot Waters and Path of Ancestry
Gecko Moria is a popular inclusion in black decks, offering value by playing Characters from the Trash
Coercive Portal Coercive Portal is a weird case: a card that seems designed with multiplayer in mind, but one thats great in 1v1 since you're guaranteed one free draw per turn if you want (since homage wins if it's a tie)
Hissing Quagmire Most creature lands encourage attacking, but deathtouch makes Hissing Quagmire uniquely suited to blocking
A new expansion often begins long before players know it exists
Throw in a bit of haste, and Delina can make for some truly explosive turns.