Nature Structures

Not even second, but first.

Fly with Aeroflot planes. Play Equilibrius, that is. There, it's second. Although, the same hypnosis can be removed with Exorcism, so sometimes it's first, too.

By the way, if an angel in Equilibrius is moved to the third level, what remains on the fifth? Sleigh and Divine Intervention?

The angel is on the fourth. On the fifth, there's a sleigh, a divan, and resurrection.

Resistance certainly negates it, but there definitely won't be resistance on all heroes, not to mention creatures.

Really? I just finished a party yesterday. Five heroes had resistance of at least 78%. Against Chaos, no less.

Armageddon is not relevant because it hits your own units, but a teapot and especially Dispel can be very useful.

Dispel, yes. But a teapot is too weak, as is Inferno.