With this in mind, anti-graveyard cards like Rest in Peace, Leyline of the Void, and Unlicensed Hearse are well-positioned and worth your sideboard slots
Serialized cards can only be found in Collector Boosters
If I'm struggling to get my commander into play, but I've got lots of Spider-folk around, Spider-Mobile gives me a potential attacker with base stats of 3/3, Trample, and +1/+1 until end of turn for each Spider I control
Grandeur Discard another card named Baru, Fist of Krosa: Create an X/X green Wurm creature token, where X is the number of lands you control
And just like Kefka and Kimahri, it scales with the power of the table
They look special, but they are worth about $12 to $135 depending on the character and condition, with complete sets around $200