Is the following promotion correct, or should Red's Parasite return to the player's tableau?
Red Hyper < Green Parasite < Red MicroOrganism
Red Parasite < Red MacroOrganism (w/Green Endo)
[H3] states that, "A Hyperparasite becomes a Parasite of the Macroorganism"
However, [E3] is clear that, "The Host must be in the tableau of another player"
& "You cannot attach a Parasite to an Organism in your tableau, only in a foreign tableau."
That's correct. If it ever detached though then you cannot reattach it.