Hanza, Ninja Boy

Ninjutsu {u}
When Hanza, Ninja Boy enters the battlefield or
is sent to the graveyard from play, you may put a
-1/1 counter on target creature.
{u}: Target creature gets -1/-1 until end of turn;
you may only do this once per turn and only on creatures with Toughness greater than one.
Hanza is Hanzo'a twin.