Doppelgängers

[Johng4490]

Hey I'm working on a 'fun' duel deck for me and a friend, and the idea is this: white vs black doppelgänger/lookalike.
Examples:
{Sanctuary Cat} = {Black cat}
{knight of glory} = {Knight of infamy}
{Mikeaus the Lunarch} = {Mikeaus the unhallowed}

More ideas?

[whitedrake]

If not limited by expansions...

{White Knight} =  {Black Knight}

[Vyse]

 {Moonlight Geist} and  {Searchlight Geist} work