Magic players everywhere have probably heard of typal/tribal synergies, but players can easily forget that kindred/tribal is also a card type
Dimir Control decks have been floating around every so often in Standard, but they all had the problem of not having very many effective win-cons, and Ashiok brings that to the archetype
Mikaeus, the Unhallowed [Highest Combo Potential With Undying Synergy] Mikaeus, the Unhallowed enables explosive turns by giving undying to all non-Humans , turning Zombies into repeatable threats and combo pieces
If the 2/2 bear tokens appeared on more cards, that alone could justify the existence of bears as a type, but we havent actually seen one since before Modern
The Commander When you build around a commander you sometimes focus on just one of their several abilities, but thats not the case here