Tyrant of Discontent

Flying, haste, wither
Cumulative battlekeep, discard a card (At the
beginning of your combat phase, if this permanent is
on the battlefield, put an age counter on this permanent.
Then you may discard a card for each age counter on
it. If you don't, sacrifice it.)
Tyrant of Discontent's power is equal to three
times X, where X is the number of age counters
on it.