Notably, this means that you may discard a card to keep Argentum Masticore on the battlefield even if there isn't a legal target for that second triggered ability
We also got to see Ravenous Tyrannosaurus, which enters the battlefield with three +1/+1 counters for each creature you sacrifice for it and can blast something in the face
Many ideas and mechanics that used to be silver-border are now printed in black-bordered sets, sometimes 1-for-1 When people approach me about silver-bordered cards in Commander, the most common topics are (in no particular order) Host/Augment (and Surgeon General Commander), Acornelia, Krarks Other Thumb (and other coin flipping/dice rolling cards from Unglued), and Contraptions
On the one hand, they die to board wipes, and on the other hand, they also synergize with creature-based strategies
Discard effects can go even further, eating away at your opponents hand each turn to deprive them of resources in the long game
Part of me thinks this deck might be closer to an Optimized decklist, but only time and testing will tell