Ashcoat Bear, a common creature from the Time Spiral set, is the same thing but with flash, a minor but worthwhile twist to the older, more basic Grizzly Bears formula
Creature - Human Knight Color tag templates(None) Diamond Knight Vigilance (Attacking doesn't cause this creature to tap.) As this creature enters, choose a color
In Magic, this isnt much of a downside
Prowess with haste is awfully good, and just when you run out of gas, you can drop this and flip it for a total of 4 mana in the right deck, and draw three cards
I dont think this card is game breaking on its own but it can do some serious damage paired with the right sacrifice outlet
If you attached Energy to a Pokmon in this way, draw 2 cards