Rent is Due

• You may tap an untapped permanent you control to spend untapped mana your opponents control
•During each opponents endstep, you may gain mana equal to their untapped mana.
{2}Choose 1 color. All mana you control becomes that color
Your opponents may pay any number of life. Any life lost this way will allow for them to prevent you from gaining an equal value of mana from them that turn.
"Pay up or you shall perish"