With creature removal you are looking for efficiency and that is pretty much it
Planeswalkers often benefit from damage prevention because it stops your opponents from attacking them effectively, buying plenty of time to ultimate them and get a shiny emblem
As for a nice example of the Michi method in action: @slowqueen used it in a few of her binder pages: Slowqueen's Slowpokes, Slowbros, and Slowkings (Update: Spanish Unseen Forces (Fuerzas Ocultas) complete!) Neo Destiny Im very happy to be done with this one, the French and German 1eds in particular were a pain to find
Both players are effectively trashing four cards, and trading a fifth, just to get one in return
First, there's a pretty good chance that any given copy of the card is going to have one of two misprints on it
It is scheduled for Austria and New Zealand this month