Is SpellBinder too strong?

[Acquired]

I just got spellbinder in c3, and I like the concept of it but im not sure if its gonna be too strong and make the games difficulty too easy. I like the challenge of the game, and Ive seen several posts saying spellbinder makes the bosses too easy. Is this true, or is it fine to use?

[Baron01]

Sure, SpellBinder is strong but it will start fading when you start reaching bosses that you simply can not bully in one go or they have multiple stages.