QUOTE
which cannot crash starcraft
Yes, as RexyRex posted.
And I would suggest the merge time be 65535.
Pure sprites do not affect the game in any way, meaning the pylon aura sprite does not replace the true pylon. Sprites are basically just for looks.
Sprite-units are sprites that have the "Draw as Sprite" box
unchecked, making them a unit. Sprite-units are different than normal units though, like the Start Location. Placing a sprite-unit Start Location will make it show up in game, and you will be able to attack it, click on it, etc. Sprite-units also keep their original Starcraft HP over the HP you set. Example: Say you set the marine's hp to be 10, and the normal marine in Starcraft has 40. The sprite-unit marine will have 40/10 hp in-game. Sprite-units can also be pre-disabled, giving more weird options in Starcraft.