Immerwolf is a rare Creature — Wolf card from Secret Lair Drop (SLD), collector number 809. Current market price: $4.95 (foil $5.02), TCGplayer market prices via Scryfall.
Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) Each other creature you control that's a Wolf or a Werewolf gets +1/+1. Non-Human Werewolves you control can't transform.