Cheyenne, Death's Widow

This card is unaffected by Commander Tax.
This card costs {2} more for each Tax Counter attached to it
Ward: {2} or Cheyenne's controller creates three Treasure Tokens
Eminence- You may pay {w}{u}{b}{r}{g} to remove
any amount of Tax Counters from this card and
create that many Treasure Tokens.
Unused Mana in your mana pool become
tax counters attached to Cheyenne as steps
and phases end