To make matters even more interesting, every single card in your deck needs to be unique
In general, modal spells and modal abilities on permanents either need to have a mode thats too cheap for the flexibility or be so ubiquitously useful in every game state (Abrade) to be worth including in a deck, and Warren Warleader has neither attribute
What Counts as Completing a Dungeon in MTG
Eevee [1st Edition] #51 Pokemon Jungle Keep track of your collection value over time
Introduction of Trading Card Games The 1990s saw the introduction of something entirely new: the trading card game
Oracles, arguably a type of Seer, were people who could (seemingly) see the future and on occasion played a significant political role in Ancient Greece, providing guidance to monarchs and political leaders, all while they were publicly apolitical