Would the passive on Luden's Echo stack with Veigar's Q? According to the wiki:
PASSIVE: Veigar permanently gains ability power every time he scores a takedown against an enemy champion.
ABILITY POWER GAINED: +1 / 2 / 3 / 4 / 5 AP
Whenever Veigar kills a unit with Baleful Strike, he gains +1 AP, doubled to +2 AP against champions and large monsters and minions.
ACTIVE: Veigar unleashes a bolt of dark energy, dealing magic damage to the first two units hit.
So if you threw Veigar's Q into a group of low minions, and the three bolts from Luden's Echo's passive kill three extra minions (totaling 5 minions killed), would you gain bonus AP from those 3 minions also besides the two you hit with the spell? Why or Why not?