Void Walker

Battlefield entry — Exile any number of lands
from your graveyard or hand. Choose 1 for each:
• This enters with a +1/+1 counter on this.
• This deals 1 damage with wither to target
permanent.
{t}: Add any mana a land in your exile could.
{r/g}, Exile a Forest and a Mountain from your graveyard: Shuffle this from your exile.