TriusMalarky I disagree with your evaluation of Opposition Agent
A 6/4 double striker is a potent threat, especially when it can bounce back to hand upon death with the Sword of the Realms other ability
Since the extra combat phase comes from an enters-the-battlefield trigger (ETB) , you can also abuse this Aura if you can find a way to flicker it
Nesting Bot When this creature dies, create a 1/1 colorless Servo artifact creature token
1 Traditional foil full-art Eldrazi land 1 of 5 full-art Eldrazi basic lands 1 Non-foil common or uncommon retro frame card or full-art Snow-Covered Wastes In addition to the full-art Snow-Covered Wastes found in this slot (2.6%), here you will find a selection of commons and uncommons from MH1, MH2, and MH3 all brought into the retro frame
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