From the drafted cards, they build a 40-card deck using any number of different inks (rather than only two inks)
Throw a potent card like [card]Purphoros, God of the Forge[/card], into the mix and suddenly Norin becomes a clock for the entire table
Following Magic-related social media and news is probably the only way to guarantee that youll know about card legality changes when they happen, but most MTG players are hobbyists and not diehard fans
though of course theres generally nothing stopping you from using these cards in your deck, you wouldnt expect to see cards from these boosters in the wild, as theyre generally just variants of existing cards that are much cheaper to acquire, and intended for repeated handling
If, however, that five-drop in hand was actually a six-drop, then Id generally just turn my lowest-cost card into ink
It allows for some pretty incredible aggressive gameplay moves