In addition to Magic: The Gathering Arena, games like Hearthstone (developed by Blizzard) and Gwent (initially a mini-game in The Witcher 3 before becoming a standalone title and even a board game) have successfully translated TCG mechanics into the video game space
For example, if an opponent lost 1 life, the first one's triggered ability to resolve causes them to lose another 1 life
But as I studied a lot of economics in my Masters program, it just takes one person, in a moment of weakness, to be incentivized to do the wrong thing
He is, essentially, an add on effect to your creatures (including himself) to grab your opponents cards when they make contact with their faces
For example, a Naya (green/red/white) commander means you can only play green, red, and/or white cards in that deck
Sauron the Dark Lord packs unique ability on top of unique abilities, which makes him really fun to play