The Soul Stone Even without all the harnessing and sacrifice text, The Soul Stone would be playable purely as an indestructible, untapped mana rock for 2 mana
The impact of a booster boxs age is pretty self-explanatory
Mutate was a mechanic introduced in Magic The Gathering's Ikoria: Lair of Behemoths (though it first appeared on a card in the Unsanctioned set)
We are not interested in introducing sideboards into Commander, and are not comfortable with defining outside the game as all cards you own (it was defined this way years ago and led to a lot of problems and arguments.) However, the alternate mode of discard and draw works fine, as the restriction is limited to the part of the card the looks for a Lesson
These TCG card types stay true to the character's core, but bring a new aspect of their personality to the forefront
It even has the magic text that will return it to your hand from the graveyard