Holden, Value Agent

All Colors, Rampage 2, Trample
Eminence- You gain Holden's Emblem.
At the begining of your endstep, you may remove
X poison counters from a player and exile a spell
or land from their deck with mana value equal to
or less than X. You may play it using mana of any
color as long as it remains in exile. X must be
at least 1.