At least other cards like Moat are cheaper
Not only does this creature protect itself, but it provides each other Merfolk you control with Ward 1, making them also more difficult to remove
Fetchlands like Misty Rainforest are great ways to reset the top of your library to get a fresh look with The Fourth Doctor, but Id also recommend trying out cards like Bant Panorama and Shire Terrace which enter the battlefield untapped and tap for colorless mana in the early-game, and then you can cash in for a basic land and shuffle your library later when you need it
However, what you give up for a better Rakdos Midrange matchup is that you are worse against Abzan Greasefang due to your lack of interaction spells, and you are unflavored in the aggro mirror against Mono Red decks because they have access to Rending Volley and Goblin Chainwhirler
Different issues have persisted or emerged with the types of foiling throughout the years
Rightfully so, as you are dishing out repeated damage, either in large chunks or death by a thousand cuts, this deck has cards like Lord of Pain and Rampaging Ferocidon