The Treasury

Taxes: At the beginning of your upkeep,
each player may pay {1}. You receive 1 Gold Coin
for each mana spent this way.
Gold Coins can be spent:
{1}: Redirect 1 damage to a good player
{2}: 1 colorless mana
{3}: 1 mana of any color
{4}: Draw 1 card
{5}: Create a 2/2 white knight