Not only will your leftover creatures help pay for the convoke cost, but youll have more tutor targets to choose from if you build with cards like this in mind
The main reason it was banned wasnt because its overtly oppressive, but because its so good as the commander of just about any strategy that it actually stifles creativity and diversity, and diluted new deck ideas, and fielded out more synergistic commanders in their own decks
The main use, however, is against Ramp
Since I already like bargain hunting, putting together a list of reliable sellers to compare card prices was a no-brainer
It just goes to show how much of a difference a little mana discount can make
Each turn, he adds up to 1 DON from his deck, then attaches up to 4 rested DON to a single Character