Schwartz, the Dolphin King

When Schwartz, the Dolphin King enters the battlefield, if you control a creature with a +1/+1 counter you may choose one of the following:
• Put a +1/+1 counter on each creature you
control with a +1/+1 counter
• Move any number of counters from target
creature you control to another target creature
you control
• Return target nonland permanent with no
counters on it to its owners hand