You can use it to ramp yourself via Fetchlands, double down on powerful enters or leaves abilities, and everything in between
The most important card in the deck is Resurgent Belief, a forgotten bulk rare from Modern Horizons 2
One of the classic archetypes in Magic is Reanimation, using spells and abilities to return highly impactful creatures from the graveyard to the battlefield
Any deck that cares about self-mill will have plenty of options for getting cards into the graveyard, with Sultai-based dredge decks able to capitalize most readily
Its a great time to pick up packs from recent sets like Shimmering Skies and Reign of Jafar to get ready for the new format, or grab some Ursulas Return packs for your Infinity decks
If Strax is dealt damage equal to its toughness while fighting, it will die before the +1/+1 counter from its last ability can save it