The thing I love about this card is that it can help your Werewolves no matter what state they're in, as long as it's in the same state

Abandon Reason Abian, Luvion Usurper (playtest) Abolish Academic Dispute Academy Raider Academy at Tolaria West Acceptable Losses Action News Crew Adventurer's Airship Agna Qel'a Agonasaur Rex Airship Crash Ajani's Last Stand Akki Ronin Akoum Flameseeker Akroma's Blessing Akroma's Vengeance Alabaster Dragon Alabaster Host Intercessor Alchemist's Greeting Altanak, the Thrice-Called Amber Gristle O'Maul Amok Angel of the God-Pharaoh Angel of the Ruins Angelsong Anje's Ravager Antagonism Anthropede Anurid Brushhopper Anvil of Bogardan Apocalypse Arashi, the Sky Asunder Arc Mage Argentum Masticore Arm-Mounted Anchor Arrogant Wurm Arterial Alchemy Artillery Enthusiast Artist's Talent Ash Barrens Ashling, Flame Dancer Ashling, Rekindled Ashnod's Transmogrant Astral Drift Aura Extraction Avacyn's Judgment Avaricious Dragon Aven Trooper Avenger en-Dal Avishkar Raceway Axiom Engraver Ayula's Influence Azra Bladeseeker Bag of Holding Balamb T-Rexaur Balance Balduvian Horde Bamboo Grove Archer Bannerhide Krushok Banon, the Returners' Leader Barbarian Bully Barkhide Mauler Barren Moor Barrier Breach Bartered Cow Baru, Fist of Krosa Basking Rootwalla Basri, Tomorrow's Champion Battle Plan Battlefield Scavenger Bazaar of Baghdad

Not only will this make your spells cheaper, but Heralds Horn will occasionally draw some extra cards
This card can ramp and gives you so much card advantage that its a must-kill when it hits the board
Reckless Rage Reckless Rage is another way to trigger enrage while also doing something else useful, in this case killing smaller creatures
And just like Basilisk Collar, this is another equipment you can search out with an Urza's Saga, which is always worth noting