Daenarys the Unburnt

When Daenarys the Unburnt enters the battlefield, you may sacrifice two creatures. If
you do, create three 2/2 red Dragon creature
tokens with flying and "{r}: This creature gets
+1/+0 until end of turn."
"The fire is mine. I am Daenerys Stormborn,
daughter of dragons, bride of dragons, mother of
dragons, don't you see?"