Hello. I have a unit on my map that has a normal melee attack. But I also want it to fire rockets on enemy units. I thought of having Phoenix Fire as the rocket-ability, and have a Cargo Hold for Burrows so only Peons are able to be loaded in the unit. Up to 4 Peons can be loaded and when more Peons are loaded the attack speed or the damage of the Phoenix-Fire is increased. But I dont know how to increase the Phoenix Fire effect when more units are loaded into the cargo hold. I heard there is a trigger for this. Thanks.