Every time you do this your opponent can draw an extra card
More to the point, Auriok Champion and cards with similar protection are the cards I really think buff a deck in a way thats hard to tangibly track
The copyright situation is genuinely murky, the interface requires a learning curve, and the lack of automated rules enforcement puts the burden on players to stay honest
However, there is one big trap people tend to fall into with lower-rarity cards: counting them at their retail price
Black is one of the most popular colors in Commander, and as long as one player is running it, theres a good chance youll get some card draw here
Speaking of the return-from-the-graveyard ability, like casting Compelling Argument, this isn't something that happens often