Yachie the Exploiter

When Yachie the Exploiter enters the battlefield,
gain control of target creature with power less
than or equal to Yachie the Exploiter's toughness
until Yachie the Exploiter leaves the battlefield.
At the beginning of your turn, for each permanent
you control owned by another player create a 1/1
green otter spirit creature token with 'Sacrifice
this creature. Target creature gains Ward {1} until
end of turn.'