In commander any number of powerful tutors are under 4 CMC, as well as some really strong spells, especially perhaps things that you overload, though the most commonly overloaded spell "just" returns permanents to players hands
Quite a risky card but well worth it if you have a solid mana base and some really good things to burst out for four and five mana
In the early days of Magic , color changes were all over the place, as were hosers of various sorts, and you saw those changes heavily
Six Sorry, I didn't have the bark to put Six at #6
It revisits the fairy-tale plane of Lorwyn with a darker tone and renewed focus on tribal play
Invent Superiority Finally, we have what was another highly coveted deck in Invent Superiority