Ganon, Catalyst of Calamity

Trample, haste
If you would put one or more counters on a
permanent or player, put twice that many of each
of those kinds of counters on that permanent or
player instead.
If an opponent would put one or more counters on
a permanent or player, they put half that many of
each of those kinds of counters on that permanent
or player instead, rounded down.