If a spell says "each of up to ~ creatures," like on triton tactics, can you target the same heroic creature twice to trigger the ability twice? Or does the spell need to have multiple instances like on hidden strings or seeds of strength?
Also, can you trigger heroic if the target is "illegal"? Like targeting Agent of the fates with my own doom blade? (I ask because I believe it will work even if the spell if countered, because it triggers upon casting, right?)