The issue I have with this card is that it's too fragile for my preference. An Opportunity monster could easily eliminate it right at the beginning of the game. Additionally, as you mentioned, the Fire Splinter just isn't an ideal team for a Magic monster to thrive.
I'm certainly not someone who has good luck with RNG during battles, but I did hit the jackpot with this LGF and with an additional copy to spare! It's probably one of the best Soulbound Legendaries introduced 😍