Hanzo, The Wayward Seeker

Haste, Hexproof from red
Ninjitsu - Flip a coin. If you win the flip, you may replace target unblocked creature with Hanzo,
The Wayward Seeker from your hand.
Brotherhood - When Hanzo, The Wayward Seeker
deals damage to an opponent, it deals X damage
to each creature that opponent controls, where
X is equal to the number of other Legendary Creatures you control.