If I tell people about rare cards, then I give knowledge to the community, but it also makes it much harder to obtain these cards since more people are aware of them and searching for them
But at the same time, Ive accumulated single copies of some really good blue spells for the time when I wanted to play on the dark side: I just recently traded for a Mana Drain, a card Ive secretly coveted for over twenty years, but thanks to a reprint I was able to pick up an Iconic Masters copy for a reasonable exchange
[[M'Baku, Jabari Chieftain]] does help you take the Monarch, but it also works for your opponents taking it from each other too, giving +1/+1 and Trample
Raw vs Graded Pokmon Cards: Whats the Difference
Not only are the card backs unique, but the front of the cards have an unusual, hand-drawn style to the art and even the text