Delayed Gratification
Supports Skills which require some Condition to be met for use. Supported Skills can be used an additional time after their Condition has been met, but meeting that Condition is harder.
Good option that performs well in the right setup or as a levelling skill.
Gem Effects
Supported Conditional Skills can be used an additional time within 10 seconds of using them after meeting their requirements
Conditional requirements of Supported Skills are 150% harder to meet
Requirements
How to Use Delayed Gratification Effectively
Practical tips you won't find on the tooltip
Gem Level Priority
Support gem level often provides bigger DPS gains than you'd expect. +1 gem level gear is excellent value.
How to Get Delayed Gratification
Use an Uncut Support Gem to obtain Delayed Gratification. These drop from enemies or can be purchased from the gem vendor once unlocked through the campaign.