Legendary creatures like Alela, Artful Provocateur and Raffine, Scheming Seer are more than just commander options
Signal the Clans Continuing the suite of 2-mana meh creature tutors, Gatecrash s Signal the Clans just barely beats out Altar of Bone by virtue of possibly landing you two cards you want in your graveyard instead of just one
That is to say, there are myriad ways to blow way too much money on this thing
However, Cavalier is much better than Grey Knight thanks to its ability to destroy any nonland permanent instead of just attacking creatures
My next deck a Tribal Rakdos build around Raphael, Fiendish Savior, and his love of Tribal and loving creature that went to the graveyard from anywhere
And while there certainly are expensive upgrades you can make to either of these decks, they both feel strong, think-y, aggressive in their own ways, and will provide many, many games of Commander where you should feel fairly even-toed with everyone else at the table