Zombie decks are best at taking advantage of creature deaths, and cards like these underlie the popularity of zombie decks overall
Card Text: +2: Up to one target legendary creature gains vigilance, lifelink, and indestructible until your next turn
While Silent Hallcreeper is a copy of another creature, it won't have any of its previous abilities
A standard Magic cards weight (on my scale) around 1.73 g the variation is usually in the order of 0.02g
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Specifically, with Daretti as your deck's commander, you'll want to be dumping your own artifacts into the graveyard, sacrificing little trinkets or treasures to bring back giant war machines and powerful monuments