The most common variety are cards which increase the cost of opposing spells (Trinisphere, Thorn of Amethyst, Grand Arbiter Augustin IV), but some punish actions with the loss of life or other resources (Painful Quandry, Manabarbs), limit access to lands and mana (Winter Orb, Opposition), or outright stop opponents casting spells (Drannith Magistrate, Ethersworn Canonist, Rule of Law)
This ability means that, if characters named Dewey and Louie are also currently in play alongside Huey, then whenever Huey, Savvy Nephew quests you are able to also draw three cards, as well as gain a lore
VS Seeker Grab a Supporter from your discard pile and put it into your hand
There are also a few cards to consider that I hadn't mentioned in the article
Memnarch Created by Karn as the sentient incarnation of the maddeningly powerful Mirari artifact, Memnarch was an artificial being of immense curiosity