How to make a low power deck from scratch?

I've been thinking about making a werewolves tribal deck with Tovolar as a commander for playing against people with precons and weaker decks. Are there any combos or cards i should be avoiding? I also don't want it to be unplayable so im wondering if sticking with healthy mana base is a good idea. Is including cards like herald's horn an overkill? Because i know that this deck is not really good by design unfortunely and i don't want too handicap myself too much. IF somebody could share a decklist that's low power it would help me tremendously.