As a late game card Courser is typically rather weaker than the others on this list
If youve ever played a deck where you find yourself wishing your mana base was a little more robust, then plop one of these into the decklist and live your rainbow dreams as you no longer have any issues casting spells of any color
While Ancient Grudge may not be worth it, paying 2GW for a 2/2 that breaks a Dimir Signet is good, and a 2RGW Tin Street Hooligan / Steamcore Weird is great
The four-cost uncommon will draw two and then lose 2 life and make a Black Wizard dork and then pump them with lifelink and power too
If youre looking to expand your existing knight deck into new blue territory or you want the foundation of a good tribal deck with the staples that this deck provides, by all means, pick it up
As interesting as these creatures were, it is quite possible that the best use for them was food for Lord of the Pit