Phyrexian Ultimatum

Other permanents have
''Cumulative upkeep—Pay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay
its upkeep cost for each age counter on it.)''
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''Citizens, I hereby declare a tax be paid in the
name of glory to the amount of 1 pound of flesh.''
-Elesh Norn