Limit devour to one per troop? Kind of similar to Maw. Thoughts?

[ZooKeeper]

So I found the spreadsheet¹ of devour occurrence my friend tracked a while ago. He tracked 3563 battles, 2500 of these devour (kerberos) was used and it proc in 1399 battles. So the percentage is 55,96%.

¹_{ignore death mark table as it was not accurate due to statistic flaws and anomaly.}