Eller Criminal Accountant

Hide The Wealth: You do not loose unspent blue
mana as steps and phases end.
This mana cannot be used to pay for X costs or
spells with counter effects.
Pay Them Off: While there is 10 or more blue
mana in your mana pool cards in your graveyard
have flashback and unearth. The mana cost is
their regular mana cost.
Merry Dragmas.