The Scarab God (cringe overdose) (very icky) (EDH / Commander)

Escalating Damage Combo:
Paradox Haze + The Scarab God + Wound Reflection . The Scarab God 's upkeep ability triggers and then triggers again because of Paradox Haze dealing essentially double damage. Then the endstep roles around and Wound Reflection doubles the damage again.
Additional Cards That Spiral The Combo Out of Control:
Strionic Resonator , Endless Ranks of the Dead ,

Escalating Field Mill/Zombie Factory Effect:
Mindcrank + The Scarab God + Undead Alchemist . Scarab God's upkeep ability triggers Mindcrank which then mills everyone triggering Undead Alchemist , producing zombies for every creature that enters the graveyard.
Additional Cards That Spiral The Combo Out of Control:
Strionic Resonator , Endless Ranks of the Dead, Wound Reflection
Altar of the Brood will kick this simple 3 card combo into overdrive, especially since you can get 2 proc's with a single fetch land, exponentially multiplying the mill combo and killing everyone simultaneously.

Field Wide Infinite Mill/Damage Win Condition:
Bloodchief Ascension + Mindcrank + The Scarab God . Requires Bloodchief Ascension to have 3 counters first and The Scarab God 's upkeep ability to trigger.

Stealing Attacking Creatures:
Grave Betrayal + No Mercy And just eat the damage. You'll gain it back eventually.

Potential Upkeep Field Wipes:
Endless Ranks of the Dead + Noxious Ghoul Lets say you created (5) 2/2 Zombie Creature tokens at the beginning of your upkeep. Now all Non-Zombie creatures get -5/-5 until end of turn. Double this effect with Paradox Haze / Strionic Resonator

Undying Zombies With Token Production:
Mikaeus, the Unhallowed + Open the Graves Sac a non-token creature through attacking, blocking or sacrificing and return it to the battlefield with a +1/+1 counter and a new 2/2 Zombie friend to accompany him.

Gain Large Amounts of Life Every Upkeep:
Exquisite Blood + The Scarab God
Ayara, First of Locthwain + Endless Ranks of the Dead + Exquisite Blood . Double these two combos with Strionic Resonator to add insult to injury.