Its a smart and proactive way to redirect pressure
For example, you might build Kaalia with a split of all three creature types, but there are people who have bias towards just one of the three
As outlined in The Color Purple , a 2007 article from Designer Paul Sottosanti, A sixth color was one of the options the design team considered to convey the alternate reality concept of the set
Opening the game with more than one could land someone in easy burn range before the game even started, and it also made lopsided games even worse
If the combo aspect of toolbox decks is worse than hate cards against unfair decks and not great against fair decks, why play a combo to begin with
There are various ways to make Wolverine do burn damage equal to its power, which helps close games out if you can't quite reach the commander damage threshold