Most significantly, spacecraft, alongside existing legendary vehicles, can now function as commanders in the Commander format, broadening deck-building possibilities and establishing new archetypes
That helped blend themes in the two sets and was a nice throw-forward
It cantrips and provides a mana advantage, and it requires exile-based removal or graveyard hate to stay down
Tolsimir, Friend to Wolves also gives you access to white, opening up more spells that boost your wolf pack, as well as more board control with cards like Day of Judgement
Getting to pay energy to put +1/+1 counters on it is nice with Cayths Proliferate ability, and Overclocked Electromancer has the potential to hit hard
Werewolves and wolves are two different creature types