Opponents can not block and kill creatures you control.
Steps
Declare
Najeela and
Bloom Tender as attackers.
Najeela and
Raggadragga's second ability triggers.
Resolve the
Najeela trigger, creating a 1/1 Warrior creature token that is tapped and attacking.
Resolve the
Raggadragga trigger, untapping
Bloom Tender.
Activate
Bloom Tender by tapping it, adding ({W} magic symbol) ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol) that cannot be spent to pay generic mana costs.
Activate
Najeela by paying ({W} magic symbol) ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol) , untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one.