Cleansing Storm (Flip Reiki)

Sacrifice an untapped Merfolk: Gain 3 Life
At the end of your turn, You win the game
unless your opponent pays {1} for each tapped
Merfolk you control.
"Reiki sat looking at the oncoming storm. She quietly chuckled, thinking to herself that if they had only
waited a week, there would have been no reason to
fight."