Adding attacks

Hi there, just wonder if ne one out there had even a single clue as to how one could make a trigger that allows one to buy extra weaponry, similar to TH15's tank command, or Battleship Commanders. i was planning on using it for the APC in my Alien map, and also in another map idea i thought up.

could ne 1 help me. i searched the trigger repository but couldn't find any related threads, nor in any other forum

tanx

Use an upgrade.

...Those are done with triggers creating invisible/invincible units under your main unit

Most of the times a modiffied phoenix fire / barrage can help you without using invisible units.

Or, give the Hero two attacks, with the second one disabled. When you want to enable it, use a trigger to research an upgrade that enables a second attack.

That would only dave his day for 1 extra attack, and he wants the hero to be able to use all the attacks at the same times like in Battleship commanders