Well break down how this unique component of Commander/EDH works so that you can become a master tactician and negotiator the next time your playgroup meets
Legendary Creature - Eldrazi Tovolar, Dire Overlord Whenever a Wolf or Werewolf you control deals combat damage to a player, draw a card
Thats right, you get an immediate effect and card advantage
Meanwhile, Yennett, Cryptic Sovereign is one of the most interesting build-around commanders in the set, facilitating a brand-new archetype in odd-converted-mana-cost tribal (while still being fine on its own, with the double evasion making it pretty easy to draw an extra card each turn if you can't cast that card for free), while Varina, Lich Queen finally unites all of the colors of Zombies, so if you are looking to add the white Amonkhet Zombies to the blue Innistrad Zombies on the traditional black Zombie base, she's the best (and only on-tribe) option for your commander
7 Emiel The Blessed Blink Blessings Similar to Duke Ulder Ravengard, Emiel the Blessed has a very strong ability to let you repeatedly get that Hare Apparent enter the battlefield trigger going over and over again
The deck's alternate commanders are Lorcan, Warlock Collector and Karazikar, the Eye Tyrant