If you are planning on building the brand new Katara, the Fearless Commander, this should be in your deck list
Design-wise they're whimiscal, straight out of a children's storybook with a clam as the main part of the face and the 'mouth', with goggle-eyes and a humanoid body glued onto it
There, audiences also got a preview of two more Goofy Movie cards
Evolving Wilds FTW Creatures (11) Zof Shade x2 Indulgent Tormentor Stormtide Leviathan Jorubai Murk Lurker x2 Gravedigger Necromancer's Assistant Gargoyle Sentinel Witch's Familiar Wall of Frost Instants (5) Lightning Strike Negate Dissipate Unmake the Graves Flesh to Dust Sorceries (4) Festergloom Divination Covenant of Blood Sign in Blood Enchantment (1) Lands (19) Evolving Wilds x3 Mountain Island x7 Swamp x8 As Reid Duke himself describes here in greater detail, this was an unusual decision that he attributed to his high mana curve, several mana sinks, solid density of card advantage, and light red splash
Lathliss can pump all your Dragons rather easily as well, making it easier to close out games since Dragons often win through combat