Mogarli

The mogarli is a rare and huge tree that can measure up to more than 130 feet. It is also called "the saint" or "the holy tree". The infusion made from its bark helps clerics ward off evil spirits and undead more effectively.
A creature with the Turn Undead ability (typically a cleric) who drinks this infusion has its DC increased by +1 when using this ability within one hour of drinking it. However, the brew has no effect on a creature that does not have the ability to turn undead.