Triggering your power-matters cards with tokens is tough but not impossible, especially with green
Im not a fan of how Winter kind of works against itself, though
Artifacts, Phyrexians, planeswalkers, and legendary soldiers within The Brothers War set remain valuable past launch on the Magic: The Gathering secondary singles market
Elrond of the White Council Elrond of the White Council can put obscene amounts of +1/+1 counters in your creatures, or you can steal some creatures from your opponents
Captain Howler, Sea Scourge Captain Howler, Sea Scourge is among the best discard commanders in Magic (notice that you can target any creature, including your opponents', leading to interesting political decisions)
This is a lot