Intergalactic Apprehension

If a creature murders, increase it's wanted level, {t} to apprehend a wanted creature.
•Wanted level 1
—Spawn in one battle droid attacking that creature.
• Wanted level 2
-Spawn in one Vulture droid attacking that creature
•Wanted level 3
—Spawn in one Humanoid Construct attacking that creature
{bull} Wanted level 4
—Summon the Pneumadrake attacking that creature