Anesha, Queen of Nets

{u}{r}, {t}: Flip a coin for each net counter on
a creature you control. If you lose fewer than two flips, you may put a net counter on target creature and gain control of it. If you lose three or more flips, each player gains control of all creatures they own.
"Trawl your netting widely, and the harvest
you'll reap well. But if you trawl through all the oceans, then your power it will quell."