Trample Attacking creatures you control get +3/+0. At the beginning of each upkeep, if a player cast two or more spells last turn, transform Wildblood Pack.
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).