Cast Rite of Replication with kicker by paying ({7} magic symbol) ({U} magic symbol) ({U} magic symbol) , creating five token copies of Terror of the Peaks.
The five Terror of the Peaks tokens enter the battlefield, triggering the nontoken Terror of the Peaks five times and each Terror of the Peaks token four times.
Resolve all Terror of the Peaks triggers, dealing 125 damage divided among a maximum of 25 targets.