Uppsala, Viking City

When Uppsala, Viking City enters the battlefield, Choose a colour. All lands you control of the
chosen colour produce an additional mana.
{t}: Add three mana of one or more colours to
your mana pool.
{3}{t}: Sacrifice a creature you control. Return
target instant or sorcery spell from your
graveyard to your hand.
Whenever an opponent deals damage put a Loot counter on each creature you control.