Shu-Gong of the Mystic Hand

Hexproof
{2}{w}: Create Left-Fist or Right-Fist, a legendary
3/3 white Incarnation creature token.
At the beginning of your upkeep, if you control
both Left-Fist and Right-Fist, Shu-Gong of the
Mystic Hand becomes a Human Monk Warrior
with base power and toughness 4/4 and
"{w}: Target legendary creature token you control fights target creature."