You control at least three other creatures that can attack this turn.
Steps
Declare Radha, Najeela, and at least three other creatures as attackers.
Radha and Najeela trigger.
Resolve the Radha trigger, adding at least ({5} magic symbol) .
Resolve the Najeela trigger, creating a 1/1 Warrior creature token that is tapped and attacking.
Activate Najeela by paying ({5} magic symbol) , untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one.