Divine Intervention is an ability available to Clerics in Dungeons & Dragons 5e. Clerics can call upon their deity in a time of great need to beg for assistance.
Beginning at level 10, a Cleric can call upon their deity for assistance during times of great need. Using an action, describe what form of assistance you are requesting to your DM and roll percentile dice. If the result is equal to or lower than your cleric level, your call succeeds. The DM chooses the nature of the intervention. If you are successful, you cannot use this ability again for 7 days. Otherwise, you may use it again after a long rest.
At level 20, you automatically succeed on your call for aid and do not need to roll.
What Effects Can It Have?
The effects of Divine Intervention in 5e are ultimately up to the DM. The most basic form of intervention is to simply receive the effects of a cleric spell. However, there are no limits regarding possible outcomes. The DM may choose to be very particular with how they interpret a player’s request. Like the Wish spell, a poorly worded call for aid may backfire.
The important thing to keep in mind though is that Paladins a questing class. Each Paladin has been sent on a particular quest by their deity. As such, any assistance from their deity should be in accordance with furthering that quest.
Divine Intervention is meant to be a last-ditch effort to help save the party in a time of great peril. When this ability becomes available, there is only a 10% chance of success. A successful roll should be rewarded in line with these odds. Unlike spells like Wish that automatically succeed, there is less room for rules-lawyering a call for Divine Intervention.