If you also have Phyrexian Altar in play, you can sacrifice one Zombie for black mana and a second one to Attrition, destroying a creature and getting both Zombie tokens back
Honored Hydra et al #21 What do people think of #22 Oh, there is one more I haven't seen here and it's enabler and payoff in one, just not really interesting outside it's home strategy #24 Almost in the same vein as Honored Hydra
The former game changer, Trouble in Pairs does nice work gaining you cards
Other spells that synergize with creatures entering the battlefield are also good choices: Warstorm Surge turns those fresh creatures into immediate damage, and Soul of the Harvest generates even more advantage after your creature hits the field
They also include ten double-sided token cards, a strategy insert, a reference card, and a deck box designed to hold 100 cards with sleeves