User blog comment:The Lost Marbles/Seles, the Shooting Star/@comment-25193301-20140802232207/@comment-5961106-20140804171831

While there are only four options of on-hits currently available (not true, because Nami's is different than even those four), it is possible to frame. For example; "... also applies on any activated bonuses provided from your own item effects or allied champions' abilities." This would include Sona's Hymn of Valor, Nami's Tidecaller's Blessing, Leona's Sunlight (for it required an activation to apply), Spellblade (for it required an activation to be received), Entropy and Sword of the Divine (for they are activated)... but could exclude Muramana (toggle =/= active) as well as any other passive enhancements to basic attacks (Wit's End, Runaan's Hurricane, Tiamat/Ravenous Hydra, Spirit of the Elder Lizard, Nashor's Tooth, The Black Cleaver, and red buff being the ones I can remember off the top of my head).

Though.. "... mimics on hit effects from/to target ally/enemy" would work, or "... grants allies your on-hit effects", or "reapplies the last on-hit effects that affected that enemy from an allied Champion (must have had at least one on-hit effect besides masteries), stacking additively with your own" would be rather snazzy. Or reverse it-- "allies that attack enemies that you have attacked within the last N seconds cause your on-hit effects (stacking additively with any that that ally may have) to activate agains tthat enemy again"...

I just meant there were places to go with the idea and that I'm going to do one. I'm inclined to follow the original outline, but there are definitely other ways to go about it, ones that I am personally more inticed to do because they'd be more original if nothing else.