Zombeasts has a such potential to be a fun and interactive card, it could have versatility and thought behind it, but then there are care such as “Frozen mammoth” “Snapdragon” and " Silverback Patriarch" “snowflipper penguin” among others in there.
Lets start with value, Scourge tamer itself is a 2 mana 2/2 which is terrible value in todays meta. Now to the zombeast it self, which is why any player would play the card. The choices are full of cards terrible cards, cards from the start of hearthstone, a 1/4 with taunt for 3 mana, or some really specific cards which just happen to be a beast or just a 1/1 with no effects. any pick of these cards will result in you just losing a huge amount of tempo because you would be paying mana for useless effects or old cards. i wont go into every choice but its easy to see why. Also there are two 1/3 with no extra text, not much of a choice, bad game design when you are choosing and the cards are the same
the cards that you want are bodies which are good for the mana value, even if they come with a drawback. and cards that come with active text like rush, lifesteal, poison, charge, windfury, deathrattles. Please remove the utterly useless cards from the pool.