The The Chosen One's Trinity Key is a key in Lies of P. It is used to gain access to the final Trinity Sanctum in the Arche Abbey Outer Wall where King of Riddles, Arlecchino is found.
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The key is obtained from the final riddle in the game, regardless of what order the riddles were completed in. Answering the riddle correctly will reward the key while answering it wrong will instead reward the player with the King of Riddles' Surprise Box. Opening the box will immediately inflict Decay but will also grant the key.
Description[]
A key obtained from the King of Riddles' last quiz. This Key probably unlocks something or somewhere.
The sacred triangle was some organization's secret mark. Rumor has it that this organization was Krat's true master.