Looking at this, I thought a lot about the most recent set excluding Final Fantasy, Tarkir Dragonstorm, and how this card fits in so well with those recently released decks and strategies
Krark, the Thumbless 50% of the time, it works every time
While six defense counters is a lot, it's not as bad as it looks because the battle itself is going to be adding a bunch of 2/2s to the battlefield that can help defeat the battle, meaning this should be one of the easiest battles to flip in the mid- and late game
Akim, the Soaring Wind | Illustration by Filip Burburan This is somewhat obvious, but dinosaur commanders are legendary creatures with the dinosaur type on them
The ceiling on it is arguably above Lingering Souls but it is a lot less convenient to setup in getting there
Maralen, Fae Ascendant Maralen, Fae Ascendant benefits heavily from getting to cast spells without paying their cost, and the main other requirement is to play creatures of two great typal builds