If you're someone who simply likes collecting, I'd certainly recommend researching each set we mention in order to get a full rundown of the card lists
Silas Renn, Seeker Adept Deathtouch sometimes says your creature is unblockable, but not always, especially when your opponents know you'll be re-casting an artifact
Each of those mechanics explored a new space, doing things we hadn't done before
With it, you can basically use your graveyard as your second-hand since they have escape
Keiga, the Tide Star was a powerhouse in Standard, and Ryusei, the Falling Star, Yosei, the Morning Star and even Jugan, the Rising Star were good
The draw card option on Cryptic is a big part of that and is the equivalent of the discard on Kolghan's