Divine Intervention

I'm going to institute a change to the Cleric ability Divine Intervention. Currently you get access at level 10, and the ability has little chance of working until level 20. Currently when you use it you roll a percentile and have to roll lower than your level in order for it to work (though at level 20, it just succeeds.) That's kinda crap, and I don't see this campaign getting higher than level 14-16 at best.

The change I'm instituting is that the ability becomes available to clerics at level 2 when they get access to Channel Divinity. The roll is still a percentile, and you need to roll below (5% + 1% per class level).

To offset this, I'm changing how long the cooldown is. The default is a flat seven days at all levels; the way I'm doing it is 28 days, minus your Cleric level (so, 26 days when you get access to the ability at level 2.)