I took some time out of the Caldera/K1 mines to do some threadling testing in anticipation for the upcoming warlock changes (see the reddit link for the result of said testing) One of the things I found was that threadlings generated from threadling grenades act in the same way as any other damage dealing grenade do except when it comes to triggerring ability regen from things like Momentum Transfer & Bolsterring Detonation This doesn't feel like it should be intended as it takes away from being able to buildcraft around ability synergy Someone suggested I post these findings here to hopefully get some eyes on the issue and get some clarification on the matter :) edit: I no spell gud edit 2: Through further testing I've found that damage caused by threadlings generated from threadling grenades correctly trigger the ability regen on the Spirit of Osmiomancy perk for the exotic lass items - which further points to me that them not triggerring the above mods may be a bug