The most obvious way to tell is if your card is shadowless is if the bottom of the card says 1995, 96, 98, 99 Nintendo Creatures If the card has the year 99 at the bottom, then it is shadowless
At the same time, I feel like there's an unspoken rule that keeps our decks at roughly the same power level as each other, which is somewhere between Preconstructed Commander Decks and Top-Tier Turn 4 Combo Decks
They're generally written "[Cost]: [Effect]." Some keywords are activated abilities and may have colons in their reminder text
Everyone who wants a Vampire deck will be able to get one, and while hes a fantastic Commander with a broken ability (Eminence is pretty damn overpowered) hes going to have trouble keeping regular nonfoils over $30
Not sure its worth it with creatures, and Im not sure Squandered Resources is the best thing to be doing outside of janky combos unless you can get lands out of the graveyard
Some sources, therefore, put the total number of unique MTG cards closer to 90,000