Najeela, the Blade-Blossom | Professional Face-Breaker

(and one other card)

Cards That Copy or Clone Creatures

If needed, create at least one copy of
Professional Face-Breaker, or cast the Clone as a copy of it.
Deal combat damage to at least three opponents, triggering
Professional Face-Breaker and the copy of
Professional Face-Breaker.
Resolve all
Professional Face-Breaker triggers, creating at least six Treasure tokens.
Holding priority, activate five Treasures by tapping and sacrificing them, adding ({W} magic symbol) ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol) .
Activate
Najeela by paying ({W} magic symbol) ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol) , causing you to untap all attacking creatures you control, give them lifelink, trample and haste, and get an additional combat phase after this one.
Repeat from step 2 each combat phase.

The combo fails to produce enough mana once you have two or fewer opponents if only one copy of
Professional Face-Breaker exists. If you generate more copies, you can get more iterations.