Daniel and Mana

Ninjutsu {2}{b}{u}

Whenever Daniel and Mana deals combat damage to
a player, that player mills X where X is its power.
Until the end of turn, you may play cards milled
this way.

At the beginning of your upkeep, exile target card
from a graveyard.Whenever a card is exiled this way,
you may pay {b}{g}.If you do, put a +1/+1 counter
on Daniel and Mana.