For three mana, it let a person cast spells in their graveyard
2 Trainer" card allowed the cardholder to return and "battle the best" in 2007
F - Lunge Out 10 Meowscarada Ability - Show Time Once during your turn, you may use this Ability
Axing the legend rule lets you double up on your commander, which is all the easier when your clone is already sitting in the command zone next to your partner of choice
Many of these stands focus on collectible singles, but will range from cheaper Pokmon cards up to more valuable finds
The speed advantage alone is significant, but the real edge is consistency: a bot doesn't misclick, doesn't get the wrong card (if configured properly!), and can run across multiple tabs or accounts simultaneously