Mistren, Fathom Kin

Mistren, Fathom Kin enters the battlefield with X +1/+1 counters on it.
{g}{u}: Untap target tapped creature you control, then put a +1/+1 counter on it.
Free in her wildness. A wanderess, water alive. Water can be gentle, but it can also crush bone and drown men.