Wilhelt turns all of our zombies into decayed zombie tokens when they die
Sudden Demise
For the former, you can use Coastal Piracy to have tokens available for defence after each unblocked attack, any card drawn can be combined with Mystic Redaction, Sphinxs Tutelage or Psychic Corrosion, the Mystical Tutor and Solve the Equation help us find the right cards for any strategy, for example Time Warp, Pyromancers Goggles or Swarm Intelligence (matching the Commander)
It allows you to pay a cost and exile a creature card in your graveyard with the encore ability to make token copies with haste equal to the number of opponents
Pumpkin Bombs is interesting, allowing you to discard two and draw three, one more card than were used to with these effects
Blitzwing, Cruel Tormentor / Blitzwing, Adaptive Assailant With Blitzwing, Cruel Tormentor, you punish players at the end step for the life they lost this turn