For the second time, it is a problem because of the timing. In Aristocrats decks you always want to sacrifice your tokens last. Your other creatures are much better fodder because they have death triggers and you can bring their dead bodies back with Return to the Ranks or Rally the Ancestors.Quote from BlazingRagnarok »
Shouldn't be a problem as long as you eat your armies first.
Specific example: let's say I have 3 lands, Viscera Seer, Doomed Traveler and a Spirit token on the battlefield. I've got three dudes in the graveyard and Return to the Ranks in hand. I can sac Traveler, make a token, then tap everything to Return for 4, bringing the dead Traveler and three dudes back. At the end of all that I've got seven bodies on the battlefield.
Now replace Doomed Traveler with Grim Initiate and the Spirit with a Zombie Army, what can I do? I can Return for 3 without saccing anything and end up with six bodies. Or, worse yet, I can sac my Zombie Army, then sac my Grim Initiate, Return for 3, and end up with five bodies.