The Arrival

1. Destroy target land. The Arrival deals 4 damage to all creatures.

2. You may discard any number of cards. For each card discarded this way, draw a card. Exile any planewalkers discarded this way.

3. Until the end of turn, you may cast any planeswalker cards that were exiled by The Arrival. Until the end of turn, planeswalker cards you cast cost {1} less for each Alien card in your graveyard.