I agree it's counter-intuitive, but I think it's because the situation for Aethermage's Touch is rare, possibly unique. The effect of AmT adds an ability to a creature in play. When abilities refer to things in play, they use the words like "creature" or "permanent", or pronouns like "it". The card reads "creature" ("it" doesn't fit), but the most accurate language for AmT would be return this "card" or "permanent" to its owners hand, but "permanent" is somewhat ambiguous/misleading, and the word "card" is not used for things in play. Either that, or use a delayed trigger instead, though I'm not sure if this would interfere with flicker or other effects. EDIT: Wait a minute... you guys are saying AmT is a delayed trigger. It is not; it gives a creature an additional triggered ability, akin to something like Echo. A card like Turn to Mist or Nemesis Trap would be a delayed trigger.