First, why we're reverting these changes: When we look to rebalance cards, our standard is Now that these cards have rotated out of Alchemy, we go from having them legal in two formats to one and can balance around that
Creating a Treasure token on attacking is a good upside, but not enough to make it something Id be actively looking for
The one from TOME costs four, has indestructible, and in your upkeep you'll lose life equal to the burden counters on it
The final and biggest con about trading is that you are putting your collection at risk as you carry it around with strangers
It has creature kill, counterspells, discard, and strong blockers that will allow you to fill up your graveyard as you're stalling out your opponent
Any effects that last "until your next turn" or similar won't expire just because they'll go through an additional beginning phase