SCP-914, The Clockwork

At the beginning of your upkeep, you may put a clockwork counter on SCP-914.
{t}:Destroy target permanent you control
{1}, {t}: Return target permanent to its owner's
hand. Activate this ability only if SCP-914 has 2
or more counters on it.
{3}, {t}: Search your library for any SCP card with converted mana cost 3 or less in your library and
put it in your hand. Activate this ability only if
SCP-914 has 4 or more counters on it.