The only difference being that creatures, enchantments, and artifacts stay on the playing field whereas sorceries and instants are placed in your discard pile, also known as your graveyard , after casting their one-time effect
I guess if you reserve all of your sadism for masochists you could be considered a compassionate sadist, but thats a corner case at best
Getting your opponent to 1 life isn't enough to win
Blocking creatures commanded by this card is already a losing proposition, and few commanders give you a better incentive to play with -1/-1 counters or toughness-based removal like Last Gasp
And the combo synergy is helpful even if youre not trying to trounce the table with infinity and beyond combos since mana dorks that are artifacts are, like, doubly killable
If you start with any Madam Mim cards in your hand, its important to also have good candidates for bouncing