Aetherdrift - Exhaust Best card: Loot, the PathfinderLoot, the Pathfinder Runner-up: Redshift, Rocketeer ChiefRedshift, Rocketeer Chief The first mechanic discussed today is exhaust, which refers to activated abilities that can only be used once during a game
Historically, errata were extremely rare events reserved as a last resort to fix broken MTG cards and mechanics
Once a player has announced that they are casting Cavern-Hoard Dragon, no player may take actions to try and change the greatest number of artifacts an opponent controls before Cavern-Hoard Dragon's cost is locked in
Bad Mechanic Hosers (Nine-Ringed Bo, Tombfire, Root Cage, Trapfinder's Trick, etc) There are a number of mechanics Wizards of the Coast were clearly worried about when they printed them