Iron will inconsistently supports minion skills

Iron will supports only some minion skills.

In patch 3.24, we will be able to turn spell damage modifiers into attack damage using battlemages cry and the new keystone. This means that iron will can provide a boost to attack damage when supporting a minion skill, as the modifiers on support gems are applied to the minion skills.

It would be understandable if the iron will support only supported certain minions (i.e. those that cast spells) but this is not the case. Iron will will happily support both herald of purity and herald of agony, as well as summon reaper, which are both melee. It won't support other melee minions.

This behaviour should be consistent, as at this stage, its behaviour conflicts with what is written on the gem. Either it should support all minion gems, have an exception noted on the gem for minion skills, or an exception noted for melee minions noted on the gem and the inconsistent behaviour made consistent.