While the latter may be true (for me, at least) the former isnt always, so taking some time to understand what adds value to a card is essential if youre a budding card entrepreneur
After all, admiring the artwork on Pokmon cards is half the fun
Then you can tap her with a green mana to make mana equal to your highest power, and with an X spell Hydra like an 7/7 you have already you now convert one to 7, and drop an 13 with that mana for the next one, draw and then have 13 even more and can win fast with their size or make enough mana to win with stuff like Staff of Possession, Fireball and other stuff
Red-blue wizards especially has a lot of cheap tricks in that vein
It does a bit too much for so little that banning it has to be done
Here's what the Zendikar Rising Set Booster will look like