(Hero - Rogue) in Heroes 4

I remember once, I foolishly maxed out Agroniel's Summoning skill. It was a nightmare! She would sneak into some hidden spot, lie down to sleep, and the next day, she couldn't breathe or move. And even after dismissing the summoned creatures, it still happened. I had to constantly switch between heroes until the game registered that my bard was without an army. And that was in the best-case scenario; in the worst case, those monsters would attack me at dawn and happily devour me (imagine a horde of hydras with medusas as backup – against Agroniel with three elementals). So, under no circumstances should you max out a rogue's Summoning skill; it's more trouble than it's worth.