The Selkie is an incredible way to draw cards, especially in a merfolk or rogue deck where you use anthems and pumps to buff it up
Equip only as a sorcery.) Artifact - Equipment Color tag templates(None) Evasion (CTRL to add secondary) Evolving Wilds , Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle
This is made even easier with entomb effects that drop those bombs into the yard for Anrakyr to conveniently discover
The next two chapters bring a nice pillow fort effect, taxing opponents that would attack you (while you can still attack freely!), and then Summon: Yojimbo ends with a blast of Treasures if your opponents control a fatty
The last card along the same theme thats impressed me is Sigiled Starfish
Starting with a mechanic idea, it felt straightforward to create some cards with the mechanic and/or that supported the mechanic, then add some generic cards like removal spells and simple creatures