And again. I won with Suzaku many times, I lost to it many times as well. And this card has absolutely ridiculous attack after a couple of facility+ cards, and no matter who played it - you or your opponent.
It's the strongest offensive card by now, and the fact thit it costs 25 stock doesn't change it. In fact, mixed cost like that makes it even stronger.
Genbu: 30 bricks, relies on your quarry to attack and on enemy quarry to build. Relatively cheap - bricks is the cheapest resource in game - but much weaker than other cards from this serie.
Seiryu: 50 gems, relies on both your and enemy magic to attack. Strong, but expensive and situational.
Byakko: 20 recruits, relies on your dungeon to attack, enemy dungeon is against it. Relatively cheap, but its cost raises with every play, and it's not so easy to "feed" it.
And Suzaku. 25 stock, relies on ALL facilities. 90 starting damage, 100 with Glacial temple, 110 with Enlightement, 150 with New era, 190 with Wonder... etc, etc, etc.
Remake it into something else. Please. This one is like All-elemental attack with no drawback and needs to generate resources.