Pelakka Wurm enters the battlefield, its first ability triggers, causing you to gain 7 life.
Crystalline Crawler triggers, putting seven +1/+1 counters on itself.
Activate
Crystalline Crawler's first ability six times by removing six +1/+1 counters from it, adding ({4} magic symbol) ({G} magic symbol) ({G} magic symbol) .
Activate
Phyrexian Altar by sacrificing
Pelakka Wurm, adding ({G} magic symbol) .
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.
Repeat.
Results
Infinite colored mana.
Infinite death triggers.
Infinite ETB.
Infinite LTB.
Infinite sacrifice triggers.
Infinite storm count.
Mill all creature cards in your library.
Near-infinite +1/+1 counters on
Crystalline Crawler.
Near-infinite card draw.
Near-infinite colored mana.
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.