4th Form: Blazing Wave

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 6 damage
divided evenly, rounded down, to up to 3 targets.
"Any other Hashira would have done the same
as I, you must continue to grow... and eventually
... you will end your hate by becoming the next
Hashira" -Kyojuro Rengoku