1st Form: Unknowing Fire

You can't cast this spell unless you control a
creature with Flame Breathing.
Tap target untapped creature you control with
Flame Breathing, That creature deals 5 damage
to any target.
"Know that I believe in your sister young
Kamado, your sister shed blood to protect the
people on that train anyone who does that
is rightfully part of the demon slayer corps
regardless of what is said " -Kyojuro Rengoku