A 6/6 for six mana might seem slow, but his ability to exile creatures and then pay 1 life to gain their activated abilities is a brewing dream
In bracket one, you already cant use tutors like Enlightened or Vampiric
Generally speaking, prioritizing cards that combine both effects is going to lead to the most resilient Lightning deck, so make sure to take effects like Celestial Armor and Bilbos Ring highly
The difference is that [[Path to Exile]] exiles the creature, whereas [[Erode]] destroys it, which is worse, but [[Erode]] can also target planeswalkers
Flipping is permanent and a one-way process - it's impossible for the card to become unflipped
After it became obvious that land destruction(s) will take place, almost certainly with collateral damage, Crucible of Worlds is necessary