Double strike Werewolves you control have menace. At the beginning of each upkeep, if a player cast two or more spells last turn, transform Terror of Kruin Pass.
2011-09-22
If Kruin Outlaw somehow transforms after blockers have been declared but before combat ends, any Werewolves you control that are blocked by a single creature will remain blocked.
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).