When Pelakka Wurm enters the battlefield, its first ability and Blasting Station trigger.
Resolve the Pelakka Wurm trigger, causing you to gain 7 life.
Crystalline Crawler triggers, putting seven +1/+1 counters on itself.
Resolve the Blasting Station trigger, untapping it.
Activate Crystalline Crawler's first ability seven times by removing seven +1/+1 counters from it, adding ({4} magic symbol) ({G} magic symbol) ({G} magic symbol) ({G} magic symbol) .
Activate Blasting Station by tapping it and sacrificing Pelakka Wurm.
When Pelakka Wurm dies, its second ability and Enduring Renewal trigger.
Resolve the Pelakka Wurm trigger, causing you to reveal the top card of your library and put it into your graveyard if its a creature card, or draw a card otherwise.
Resolve the Enduring Renewal trigger, returning Pelakka Wurm from your graveyard to your hand.
Resolve the Blasting Station ability, dealing 1 damage to any target.
Repeat.
Results
Mill all creature cards in your library.
Near-infinite card draw.
Near-infinite damage.
Near-infinite death triggers.
Near-infinite draw triggers.
Near-infinite ETB.
Near-infinite lifegain.
Near-infinite lifegain triggers.
Near-infinite LTB.
Near-infinite sacrifice triggers.
Put all noncreature cards from your library into your hand.