Great King Who Seeks the World's End

Increase Buster Card effectiveness by 10% for all allies (1 time, 1 turn) when attacking with the engraved card.

Obtained during the Holy Grail Front: Castle in the White Sky, Castle in the Black Sky event.

"Do you have ambition? If so, show it. All more so if you're leading a large number of Heroic Spirits. Without ambition, your people and generals will never follow you! Now, let the sandstorm envelop you and carve a path! Head toward the sea and raise your voice in a battle cry! AAALaLaLaLaLaie!!!"