Forgor // Rember
Instant
Exile target permanent.
Rember
Instant
Return target permanent from exile to the battlefield under your control.
Exile target permanent.
Return target permanent from exile to the battlefield under your control.
On second thought: Forgor actually is the go-to example of an effect no single color is supposed to have access to to begin with. So, this could follow the path of a gold/gold split card.