The Lich King laughs.
The Lich King yells: I delight in the irony.
Highlord Tirion Fordring yells: LIGHT, GRANT ME ONE FINAL BLESSING. GIVE ME THE STRENGTH... TO SHATTER THESE BONDS!
Light smites the ice block, freeing Tirion.
Tirion jumps and strikes Frostmourne with the Ashbringer, shattering it.
The Lich King yells: Impossible...
Highlord Tirion Fordring yells: No more, Arthas! No more lives will be consumed by your hatred!