mtg dark souls commander deck Dark Souls MTG: Hollows of

Self-mill graveyard recursion

Linden is a great source of steady efficient lifegain, which is great for Lifegain decks to fuel powerhouses such as Well of Lost Dreams, Serra Ascendant, and Ajani, Strength of the Pride

Monsieur D'Arque, Despicable Proprietor Archazia's Island's Ruby and Sapphire deck is a meta-friendly package that's ripe for upgrading

If the creature becomes a 4/4 Shark and then the cracks become completely covered later in the turn, the creature won't spontaneously become an 8/8 Octopus

Also, at the beginning of your end step you can sacrifice a Zombie to draw a card, so you can sacrifice your Zombie token with decayed you made to draw a card