Accelerated Growth

Double the number of each kind of counter
on target permanent.
Reverberate 3 - {2}{g}{g}: ({2}{g}{g}: Exile this
card from your hand with three time counters on
it. At the beginning of your upkeep, remove a
time counter from it. If you do, cast a copy of this
card without paying its mana cost. Activate this ability only as a sorcery.)