Card-Based Strategy Games
Card-based strategy games are strategy games where cards are the primary game element. Games like this vary heavily, but there is often a drafting mechanic, or an element of character or base building where players use cards to gain abilities or bonuses. These games usually have a heavy element of luck or randomness.
The goal in games like this can be based on victory points, trying to complete a specific set of cards, or eliminating certain target players, among others. Games like Poker, Spit, and Egyptian Rat Screw don't fit into this category because they lack a central theme, and don't require anything other than a standard deck of cards. Deck-Building Games could fit into this category, but have become so popular I consider them their own genre.