Acid Arrow

Convoke & Try Again

1-4= Counter this spell & you lose 2 life.
5-8= Distribute up to two -1/-1 counters.
9-12= Ditto above, but it's three -1/-1 counters.
13-16= Ditto above, but it's four -1/-1 counters.
17-20= Ditto above & this gains Demonstrate.

If you completed the Undercity it has Retrace.