The effect is cumulative. Human creatures you control will enter with a +1/+1 counter for each Dearly Departed in your graveyard.
22-09-2011
wotc
In most cases, when determining whether a creature entering under your control should get a +1/+1 counter, you'll simply look at what the creature will looklike on the battlefield. You'll consider any effects affecting a creature entering under your control.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.