Hey Ian Have a few suggestions for some flags that I think would be useful for maps. 1. The not_affect_flying flag is a valid flag for effects. Can you make it a valid flag that you can put on skills as well? I was coding an earthquake skill and realized that it made no sense for flying units to be affected by it. 2. There was a discussion about the player using skills with splash effects that can hurt their own units on another thread. Although there is a weird workaround, can you add a new flag under skills and effects called splash_not_affect_allies and splash_not_affect_ally_units? The first would be a flag that universally makes allied units and structures unaffected by splash damage of the skill while the second would be a list of allied units/structures that you can specify that won't be affected by the splash damage in case anyone needs the more fine-grained control. 3. For buffs that lasts a while, recasts make the number of rounds remaining reset. The AI does recast spells on units that still have a few turns of the effect remaining and I feel that that puts the AI at a great disadvantage because there is some resource wastage. Can you add a unusable_when_active flag (not sure whether it should be under skills or effects) that prevents skills from being used on the unit if its effect is already active? There is a weird workaround to achieve a similar effect but it is time-consuming to implement for many skills. Dickson