Abyssal Swarm

Destroy all creatures. Create X 0/1 colorless
Eldrazi Spawn creature tokens onto the
battlefield, where X is the number of creatures
destroyed this way. They have "Sacrifice this
creature: Add {1} to your mana pool."
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Emrakul's malevolent presence intensifies, and the battlefield itself trembles under its influence. The
community's resolve is put to the test as they face an onslaught of eldritch forces.