ignitions
Ignitions are more powerful boosts. You buy them in the shop for black orbs and they won't be too cheap. Once you buy them you'll notice that you can't use them immediately because they require a certain amount of your Ignition Gauge to use. You buy points into your maximum Ignition Gauge via the shop (also not too cheap when compared to the other stats you can buy). You'll notice that your IG is not filled when you buy into the maximum. In order to fill the IG you have to be in winning battles or be killed by monsters.
Once you have enough IG to use the Ignition, you activate it the same way as you would a weapon boost: /me goes (name)
You'll notice that Ignitions have two special extras in addition to +stat gains: Augments and Effects. Augments work just like weapon augments but they're only temporary until the Ignition is turned off. The Ignition effects are immediate and activated when you first use the Ignition. The effects will either affect yourself, your allies, or your enemies by usually inflicting a status effect. You CAN manually stop the Ignition before running out of IG by using the command /me reverts from (name) on your turn. Any effects that are activated when you use the Ignition are not lost when you revert manually (unless it's a one-turn type effect that would normally be over upon the target's turn anyway).
Ignitions can also be upgraded by buying them multiple times, up to 10 times. Keep in mind that the buying cost will go up upon each upgrade. Each upgrade will change the stats that the ignition gives, but the initial IG use and upkeep will stay the same.