One of its biggest strengths is working with cards like Mycosynth Lattice, where it can destroy lands or animate almost any permanent
However, once you start filling your graveyard with different card types, Winter becomes a scary engine
Its ability to reduce the cost of creatures eventually makes playing Morphs free, allowing you to drop your hand into play, hopefully triggering card draw on creatures like Beast Whisperer or Primordial Sage and making this feel almost like a combo deck
Disclaimer: We don't have any rules entries or the like for Battles yet, so I'm only going to be covering what I'm sure about so far
2/3 Minotaur Token with Haste illustrated by Magic Artist Liz Danforth
Available product images suggest the packs include one Phantasmal Flames booster and two Mega Evolution packs, although, as always with these collections, pack selection can vary between units, so keep that in mind when ordering as well