Someone's hands crackle with electricity as it unleashes a forked bolt of lightning!
Chirtlak fades into existence.
Chirtlak's forked lightning *** DEVASTATES *** you!
Chirtlak's forked lightning === OBLITERATES === a massive giant!
With a supernatural flash, the power of Chirtlak's forked lightning arcs to a massive giant!
Chirtlak's hands crackle with electricity as he unleashes a forked bolt of lightning!
Chirtlak's forked lightning *** DEMOLISHES *** you!
Chirtlak's forked lightning *** DEVASTATES *** a massive giant!
Chirtlak is covered with bleeding wounds.

Targetted area spells are fairly unlikely to chain (and typically arc to many fewer additional targets), but there's a small chance of it happening.