These decks all want to attack relentlessly, so cards that reward you for attacking and dealing combat damage are important to let you impact the midgame
"Essentially, youre not playing an interactive game anymore
On top of transforming your entire pack, you Fog every non-Wolf and non-Werewolf creature, allowing you to attack or block favorably into opposing creatures
Last year I was asked by Wizards of the Coast to do some Magic the Gathering card art for their upcoming animal set Bloomburrow ( I played a lot of MtG back in the mid/late 90's, so it was an honor and thrill to become a part of the fraternity of MtG illustrators
Focus on what your deck wants to do and determine how many creatures or spells to include based on that
Commanders like Runo Stromkirk and Serpent of Yawning Depths want you to play big sea monsters and even synergize with them, while cards like Whelming Wave reward you for playing them