As a reminder, the Game Changers list does not address some cards that fall under restrictions in some tiers like Winter Orb, Blood Moon, and Time Warp
Given that the only new mechanic is Resist, theres only the slightest rise in complexity over The First Chapter in general
And the best place to check it out for the first time is the Prerelease
In the right setup, tapping into something like Magosi, the Waterveil means youre not just getting a bonus turn youre looping the effect for infinite turns and taking over the game at your own pace
Now, clearly that card is crazy, but every now and then a strong enough life gain card comes around
Youd use your spells and abilities to deal direct damage to this bird spirit, draw that many cards, and do it again