Being such an imposing creature, Glissas Retriever has a bit of a target on it, but when it dies, you get to return X cards from your graveyard to your hand equal to the number of opponents with three or more poison counters on it, helping to refill your hand once it dies
You can get extra 4/4 Rhinos just as easily as you can get extra 1/1 Cats with this
This amethyst card has a very strong ability with the Feel the Power exert power
Sure, she works best at the helm of spell slinger builds, or decks that want to copy key creatures like Dockside Extortionist or Combat Celebrant, but those are not the only builds shes suited to
And oh, you can't counter her, and then you cannot kill her until I put the +2 on the stack, and it will still resolve