Thorn Mammoth

Casting
To cast Thorn Mammoth, pay, and put it onto the stack from your hand.

On the battlefield
When Thorn Mammoth resolves, it enters the battlefield, and its triggered ability is triggered and put onto the stack. When its ability resolves, it fights target creature you don't control by dealing damage equal to its power to that creature, and that creature deals damage equal to its power to Thorn Mammoth.