Life and Death

If Black was used in the white/black cost destroy target creature with power of 4 or less, you may also cast it as if it were an instant.
"No matter how long you live, you will always die..."
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If White was used in the white/black return target creature from your graveyard with a power of 4 or less to the battlefield.
"... and no matter how long you are dead, you will never truly be forgotten."