One of the Pack

Creature - Werewolf

(Color indicator: One of the Pack is green)

At the beginning of each upkeep, if a player cast two or more spells last turn, transform One of the Pack.

When the howl beckons, he cannot resist the urge to join the others.

5/6

Card has other part: Solitary Hunter

2016-04-08 The abilities that transform a Werewolf back and forth look at the entire previous turn, even if the Werewolf with that ability wasn't on the battlefield for some or all of that turn.
2016-04-08 To trigger the Werewolf's back face's transform ability, a single player must have cast two or more spells during the previous turn. If multiple players each cast just one spell during the previous turn, the ability won't trigger.
2016-07-13 For more information on double-faced cards, see the Shadows over Innistrad mechanics article (http://magic.wizards.com/en/articles/archive/feature/shadows-over-innistrad-mechanics).

mtg.wtf