His most recent appearance in a card game was in Dungeon Mayhem: Battle for Baldur's Gate
Sorin, Imperious Bloodlord was released back in 2019s Core Set 2020 and while its a good planeswalker, and worked in a few Vampire strategies, didnt really make much of an impact
Countering: You can counter out of attacks with counter power, character cards can have 1000 or 2000 counter power and event cards can use Don to do the same thing
If you're fortunate enough to have something like a Whisperwood Elemental on the top of your library, you can cast it on turn three
package it up nicely, send in a report to the grading company at hand so they can anticipate your order, and voila - youre good to go
Its effects also mostly target itself, so its too self-focused to be a super effective commander