Eventually, Mark Rosewater revealed on his blog how such an overpowered mechanic made it past playtesting: a combination of having to sink a lot of time into tweaking the complicated Mutate mechanic so that it didn't confuse players, and the COVID-19 Pandemic hitting right before the set's release and forcing everyone out of the office, meant that work on Companion kept falling to the wayside and eventually was allowed to be released in a semi-unfinished state, to game-breaking results
We can provide screen printing, hot stamping, frost, label printing etc
Basic Magic booster prices have floated out of pocket money range for many kids
A commander like Carth the Lion can help churn out planeswalker after planeswalker to build a league of superfriends who work together
Cards with white borders were printed in Core sets (Unlimited through 9th Edition), while some cards have special-colored borders, such as silver or gold