Though it only makes colorless mana and enters tapped, getting Mishra's Workshop Though not highly played due to its difficulty to acquire, a land that taps for three mana for artifacts definitely meets some of the restrictions we put around fast mana and belongs on the Game Changers list
If its the ladder, demand for Wan Shi Tong will probably fall off somewhat, as a decent margin of the extremely early preorder sales are for playsets of the card
Small and Deadly Cats have some of the most famous and influential one-drops in Magic history: There are equally effective two-mana Cats to back them up: Starting fast never hurt anyone (okay, maybe your opponents), and these Cats are among the fastest and strongest you can get
Sadly, this is yet another MTG card that has, rather sensibly, been kept in check by This ability triggers only once each turn. Even with this clause preventing Wizened Mentor from being downright broken, it can still generate plenty of value
Globally, events like Pokmon Worlds, set rotations, and new game launches all impact demand