Jio-Li, the Warrior

Flash
Ninjutsu {g}{g}
Whenever Jio-Li, the Warrior deals damage to a player, you may pay {3}{b/g}. If you spent black
mana to pay {b/g}, target creature gains Deathtouch
until end of turn. Otherwise target creature
gets +1/+1 and Trample until the end of turn.