Heroic Celebration

When Heroic Celebration enters the battlefield
you gain 2 life and create two 2/2 white red
knight creature tokens with vigilance. Knights
you control can't attack unless you've lost life
this turn.
At the beginning of your end step If you've lost
6 or more life this turn, create two 2/2 white
red knight creature tokens with vigilance,
then sacrifice Heroic Celebration.