So, I think for the Nidorina, I'm gonna say this one is the real one and this one is the fake one
While provoke is a solidly green mechanic and Challenge holds a lot in common with it, there is a very real mechanical/flavor distinction that makes it white/red instead
Wizards of the Coast's development team for Chronicles excluded powerful, abusive cards that were the frequent sources of player complaints, such as Mana Drain, The Abyss, Nether Void, Moat, and Maze of Ith, while including cards that they determined had a high "coolness factor" and would drive sales with the predominantly-casual player base for Magic at the time, such as the Elder Dragon Legends, The Wretched, Sol'Kanar the Swamp King, Dakkon Blackblade, and the three "Urza's Lands" from Antiquities
What I like about this set is that it feels like those games