Cleanse by Fire

As an additional cost to cast Cleanse by Fire, tap up to three creatures that share a type. Those creatures gain indestructible until end of turn.
Cleanse by Fire deals damage to each creature equal to the total power of creatures tapped this way.
"See now, mutt? We can level dozens of your homes in mere seconds. You were foolish to trust us, and now your tribe has paid the price." - Ulumas, to Shasta