Ulamog, the Ceaseless Hunger and Ulamog, the Infinite Gyre have two different card names, so you can have both out simultaneously (even though they're both variants of Ulamog, lore-wise)
Positive loyalty taps a creature, negative loyalty draws cards based on the number of tapped creatures an opponent controls (hello, mass tappers), and the emblem turns your maximum hand size infinite and (optionally) returns anything that hits your graveyard to your hand
Win Condition The win condition is classic Voltron: Suit up your commander (or a similarly evasive threat like Tifa, Martial Artist or Red XIII, Proud Warrior) with absurd power boosts and swing for lethal
Creature - Horror Kardur, Doomscourge When Kardur enters, until your next turn, creatures your opponents control attack each combat if able and attack a player other than you if able
The implied play pattern is clear