Flying creatures are not affected by this and can block whatever side they need to at the time (since they can obviously just fly over the river)
Manectric from Platinum (#11) is an MVP of this line for sure, and Manectric ex from EX Deoxys (#101) could provide some cool Trainer-lock scenarios
The Lord of the Rings: Tales of Middle Earth introduced all kinds of LOTR-themed mechanics into Magic: The Gathering
(Of course, I have already lost a game where I just needed to have a character that could Quest to win by scoring one Lore, but instead only had characters in play who could not Quest at all
Her landscapes are an absolute perfect fit for Kaldheim, and shes had two card previewed so far: a basic land in her Snow-Covered Plains and a non-basic land in Glacial Floodplain
Among trading card games, the Pokemon TCG is unique in that it's the only one that allows you to redeem your physical booster packs in its digital version