For example, Become Immense technically has a CMC of six, but if you've ever played with or against Death's Shadow Aggro, you'll know that it is most often cast for one mana, so for the sake of our calculations, we count it as one CMC rather than six
You at least get to try and keep counters on it yourself and with other cards it should be easier than just casting spells
At some point in their childhood, Tocasia took her two young apprentices, the brothers Urza and Mishra, to the Caves of Koilos, where, in a place called the Hall of Tagsin, they each laid eyes on a powerful artifact: Urza, the Mightstone, and Mishra, the Weakstone
Anything that is looking for the "natural result" is looking for the number shown on the face of the die before these modifications
Japanese Championship Promo Monkey D