"My 61st card is a tutor target for Trophy Mage, and it's better to have it in my deck so I can find it than not have it at all." That's doubly making your deck worse: you're playing a card you apparently don't even want that often and reducing the chance you draw the cards you want more
Both players pass again, so damage resolves with Opie taking 2 from the Bears
If your receive an Uncommon ICR thats upgraded to a Rare or Mythic Rare, and you already already have four copies of the upgraded ICR, the card will be replaced with Gems: 20 Gems for Rares, 40 Gems for Mythic Rares
You'll need to protect your graveyard
If the copied creature is copying something else, then the token enters as whatever that creature copied, with the listed exceptions
Flashback on a card means that in formats like Cube and Vintage, you start flashing back your Ancestral Recalls and Time Walks