why call of wild takes only 1 resource and this 27 resource and i must admit call of wild is 2 imba.
Call of the wilds takes 1R PLUS production. Its cost is 3B/3G/4R with standard facilities.
By the way, I take my words about new Call back - it appears to be pretty effective. Considering that the only Beast uncommons with relatively high attack and reasonable cost are Keeper of souls and Wolf raiders (Forest spirit is more defensive and expensive and Wolf mistress is just a summoner with attack), and Beasts' main firepower is rare Frenzy cards and Byakko - something like this version of Call is crucial for Beasts. But what makes Beast deck REALLY viable is reworked common Beast cardset - Thunderbird, Fire fox, Abyssal viper, War wolf and Dire wolves (Werewolf is kinda meh).
About Necromancy amplifier - Undead decks have some good resource cards (Vampire countess, Crypt sentry which is still very good, and CRYYYYYYPT!!!) on top of insane attack potential (-48 wall from Deathwood shaman for 10G/10R, 36 attack from Banshee for 9G/9R...) and epic support (Death wave, Eternal guardian...). I'm not sure if Necromancy amplifier should be cheaper in that case. Maybe make it 4/4/4 cost plus production x0... but nothing more.