Goldo Golderson

Whenever a Dwarf or Vehicle you control attacks create a colourless artifact token named Gold.
It has "Sacrifice this artifact: Add one many of
any colour to your mana pool."
Goldo Golderson get +1/+1 for each
Gold token you control.
{3}, Sacrifice 3 Gold tokens: Search your library
for a card named Rollie and put it onto
the battlefield.