Genius of the Slime Years

If it is a slime year, this spell costs {2} less to cast.
Choose one-
•Target player sacrifices a creature.
•Target player creates {e}{e}.
Karthus looked at the rivers flooding with mantra energy. "this can't be, another? another slime year is coming?"
but it was too late. It had been a slime year for months already, and the town was unprepared for the tribulations that would occur.
—The Slime Years, by Reginald Bund