Round table

Which spells are considered to inflict indirect damage?

In my opinion, these are probably spells like Wall of Fire, Fire Shield, or some others. For example, the Slow spell with a casting skill of 1 and a mana cost of 5 doesn't directly inflict damage, but it can allow the attacker's ranged units to fire and then retreat (surrender) before they and the rest of the army are killed (in the first/second round).

Added after 1 hour 20 minutes
Here's an example: a hero with a Titan and a Gargoyle attacks a Barbarian with the Tactics skill. If the Titan simply attacks, the turn will pass to the Gargoyle, and the attacking hero will be killed – he needs to surrender immediately. But if he casts Haste on the Gargoyle, the turn will pass to it after the Titan attacks, and only then will he surrender. Thus, it turns out that Haste, although not a direct damage spell, does inflict indirect damage...