R2-D2 And C-3PO

{t}Add one mana of any colour.
{x}{x};search you library for X cards reveal
them and put them into your hand
R2-D2 And C-3PO are tapped for X turns.
"The city's central computer told you. R2-D2 you know better than to trust a strange computer."
—R2-D2 And C-3PO