zombie world yugioh deck trading and collectible card game (TCG/CCG) Zombie World - Structure Deck:

But its still not a common inclusion since there are more coherent synergies for most sac commanders, though it does perform well in artifact sac decks like Arcum Dagsson

Captured Sunlight | Illustration by Nils Hamm Lifegain cards are cards that gain life, either as their entire effect or incidentally while you take game actions

But that's not the card's best effect, that would be its ability to send up to two spell/trap cards from the user's hand or field to the graveyard in order to draw cards equal to the number of cards sent to the graveyard

Conspiracy Conspiracy is another example in Black

A land card that can serve as a significant card draw engine, particularly in black midrange decks