Valdigan, Disciple of Vanduril

At the beginning of each of your turns, you may sacrifice an artifact.
If you do, Valdigan Disciple of Vanduril gains a number of +1/+0 counters
equal to that artifact's mana cost until end of turn.
Commune {ut} : Tap Valdigan Disciple of Vanduril. If you do, it does not untap during your next untap step.
When tapped, Scry 4 and you may Draw 2 Cards. If you draw this way, discard 1 card at random.